"A Disappearing Number" is a play that explores the life and work of the Indian mathematician Srinivasa Ramanujan. It highlights his groundbreaking contributions to mathematics, particularly in number theory, and his collaboration with the British mathematician G.H. Hardy. The narrative intertwines their intellectual partnership with themes of friendship and cultural exchange. The play also delves into the concept of infinity and the beauty of numbers, illustrating how Ramanujan's unique insights challenged conventional mathematical thinking. Through a blend of storytelling and mathematical concepts, it invites audiences to appreciate the profound impact of Ramanujan's work on modern mathematics.