According to the money experts at Forbes there are 2,668 billionaires in the world.
These are the mega-rich tycoons whose vast wealth means they are able to influence the world in a multitude of ways - from the economy, to politics, our media and much more.
Many members of this influential group are the owners of major technology giants or other companies that we rely on regularly in our daily lives.
Using real-time net worth data collected in Forbes’ Billionaire list, here are the ten richest people in the world - and their sources of wealth.

9. Sergey Brin
Sergey Brin is an entrepreneur who co-founded Google along with Larry Page and was the president of Google's parent company, Alphabet Inc., until 2019, his net worth is $112.0 billion. Photo: James Duncan Davidson

10. Steve Ballmer
Steve Ballmer served as the CEO of Microsoft from 2000 to 2014 and is now the owner of the 'Los Angeles Clippers' of the NBA, his net worth is $110.9 billion. Photo: via WikiCommons