"Dazzling and engrossing". (Colm Toibin, Guardian). Book of Numbers is a novel about two men of the same age and with the same name: Joshua Cohen. The first Joshua is a writer whose keenly anticipated debut had the bad luck to be published on September 11, 2001. The other Joshua is the enigmatic billionaire Founder and CEO of the world's most profitable tech company. Autobiography, family memoir, phoned-in ghostwriting, international thriller, sex comedy - Book of Numbers brings to life the full range of modern experience in the course of its epic journey.