Stephen King celebrates his 70th birthday on 21st September, a day his UK publisher Hodder & Stoughton is marking with a campaign called King for a Day.
King for a Day includes screenings of adaptations of King's books at the BFI and the very first author-based Twitter emoji - a typewriter dripping blood - that will appear automatically alongside the #KingforaDay hashtag 26th September.
Here are seven King facts - one for each decade of his life.
Stephen King has sold 7.7 million books, worth £56.8m, through Nielsen BookScan's TCM in the UK since 1998; in his native US it's a whopping 31.5 million.
In the US, 995 separate editions of his titles across fiction, non-fiction and "juvenile" have sold through the TCM.
The film adaptation of It had the largest opening weekend for a horror film in the US, and is already the fifth-highest grossing R-rated horror film of all time. In the UK, the film is on track to become the biggest horror movie ever, earning £22.2m after 10 days in cinemas.
King's son Joseph Hillstrom King writes under the pseudonym Joe Hill, and has sold nearly 700,000 books in the US. Owen King, his youngest son, has published several short stories and a novel, and has collaborated with his father on the soon-to-be-published Sleeping Beauties, about a women's prison. King's wife Tabitha is also a published author.
King's 1977-published novel Rage, which he wrote while in high school about a student gunman who holds his algebra class hostage, was permanently removed from print by the author himself, after it appeared to inspire four real-life school shootings.
Donald Trump blocked King on Twitter. King retaliated by "blocking" the US president from seeing "It" or "Mr Mercedes". "No clowns for you, Donald. Go float yourself," he tweeted.
Donald Trump blocked me on Twitter. I am hereby blocking him from seeing IT or MR. MERCEDES. No clowns for you, Donald. Go float yourself.— Stephen King (@StephenKing) 25 August 2017
In the 1980s, King "pulled a Galbraith", writing several novels under the secret pen name Richard Bachman. After an intrepid bookseller figured out the connection, King announced Bachman’s "death" - from "cancer of pseudonym". Last year, he published children’s book Charlie the Choo-Choo under the pseudonym Beryl Evans, and contributed the title blurb under his own name: "If I was ever to write a children’s book, it would be just like this!"