Forbes' 2016 list of the World's Billionaires includes 1,810 billionaires, down from a record 1,826 a year ago. Their aggregate net worth is USD 6.5 billion, USD 570 million less than last year. Gates remains the richest person in the world with a net worth of USD 75 billion, despite being USD 4.2 billion poorer than a year ago. He has been number one for 3 years in a row and topped the list 17 out of 22 years. #5.Jeff Bezos Age: 52 Net worth: $45.2 Billion Source: Amazon Country: United States of America

#2. Amancio Ortega

Age: 79
Net worth: $ 67 Billion
Source: Zara
Country: Spain

#4. Carlos Slim Helu

Age: 76
Net worth: $50 Billion
Source: Telecom
Country: Mexico