A BIG secret about Amitabh Bachchan revealed!

New Delhi, Oct 10: Age is just a number for Amitabh Bachchan, who turns 75 on Wednesday. His work diary is already spilling into 2019, but he remains firmly "not out", continuing a glorious journey that has lasted over four decades.

In an industry where roles are seldom written for veteran actors, Bachchan is experimenting with looks, characters and themes with an enthusiasm and passion of a newcomer.

"When he comes on the set, he is always in character. I never feel like I'm directing Mr Amitabh Bachchan. I feel I am directing the character," Umesh Shukla, who is working with the "living legend" in "102 Not Out", said.

"When he steps out of his vanity van, he comes out in the type of mood that is required for a scene and makes the atmosphere like that. It's fun to work with him," added Shukla, who has cast veteran actor Rishi Kapoor as a 75-year-old and Bachchan as his 102-year-old father in the movie.