The top twenty richest men in the world have a combined wealth of 551 billion USD. Wealthy businessmen and philanthropists, these men stand apart from all others.

The wealthiest man in the entire world is Carlos Slim Helu. From Mexico, Carlos Slim Helu is worth 53.5 billion USD. He is 70 years old and is new to the top spot, settling in bronze place last year. Carlos Slim Helu is the telephone tycoon of Latin America, chairman of Telmex, Telcel and America Movil.

Bill Gates is the second wealthiest man in the world, worth 52 billion USD. Only 54 years old, Bill Gates is from the United States and is known for his success in developmental software. He is also one of the world’s largest philanthropists, spending 800 million USD on medical research alone per year.

Also from the United States, Warren Buffett sits at third with 47 billion USD. One of the world’s most successful investors, he is the CEO of Berkshire Hathaway. He is also a large contributor to the Gates Foundation.

Mukesh Ambani of India is the fourth wealthiest man in the world, worth around 29 billion USD. The chairman and 48% stockholder of Reliance Industries, a private sector company, Ambani is plugged into one of the most successful corporations in India.

The fifth wealthiest man in the world is Lakshmi Mittal, also of India. Worth 28.7 billion USD at age 59, Mittal is one of the chairmen of ArcelorMittal. Greatly involved in the steel industry, Mittal is also one of India’s wealthiest sons.