Bill Gates reclaims Forbes richest person

(CNN) – Bill Gates is back to being number one.

The Microsoft founder topped Forbes' list of the richest people on the planet.

Gates who is valued at $76 billion knocked telecom tycoon Carlos Slim Helu from the number one spot.

Helu had been the richest man in the world for the last four years.

He is valued at $72 billion.

Forbes' list includes 1,645 billionaires.

Amancio Ortega, Warren Buffett and Larry Ellison round out the top five.