Meet Carlos Slim, the richest person in Mexico, who's worth at least $55 billion and owns an $80 million mansion in New York City

• Carlos Slim is the richest person in Mexico, worth an estimated $55.2 billion, according to Bloomberg's Billionaires Index.
• He ranks among the top 10 richest people in the world.
• The 79-year-old Mexican billionaire controls America Movil, the largest mobile-phone operator in Latin America, and holds stakes in several other publicly traded companies, including The New York Times.

Carlos Slim Helu, Mexico's wealthiest man and one of the richest self-made billionaires in the world, flies under the radar more than you might expect, considering he's involved in hundreds of companies in Mexico, which is also known as "Slimlandia." 

Slim's influence is far-reaching in Mexico and abroad. Bloomberg estimates Slim's net worth to be at least $55.2 billion, but he could be worth as much as $64 billion, according to Forbes. 

Here's how Slim built up his massive business empire. 

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Carlos Slim is worth at least $55 billion, making him the richest person in Mexico.

Source: Bloomberg

He's among the 10 richest people in the world. Bloomberg ranks him at No. 10 with an estimated net worth of $55.2 billion, while Forbes put him at No. 5 with an estimated net worth of $64 billion.

Source: Bloomberg, Forbes

Most of Slim's wealth comes from his 57% stake in America Movil, the biggest mobile-phone operator in Latin America.

Source: Bloomberg