Question: who is the richest man in the world top 20?
Answer: Jeff Bezos. Amazon founder and CEO Jeff Bezos has a net worth of 153.6 Billion US$ and ranks as the richest one on the earth today. ... 
Bill Gates. ... 
Bernard Arnault. ... 
Mark Zuckerberg. ... 
Warren Buffet. ... 
Steve Ballmer. ... 
Amancio Ortega. ... 
Larry Ellison.