Meet 5 of the world's wealthiest and most eligible bachelors

You could call them the most eligible bachelors in the world.

Five of the wealthiest men on earth are still unmarried, according to Wealth-X, a company that conducts research on the super-wealthy. With Valentine's Day in mind, they provided us with a list of the richest bachelor in their 20s, 30s, 40s, 50s, and 60s. These five tycoons are worth a combined $90 billion, and none of them are currently married.

From American tech moguls to the richest person in Saudi Arabia, here are the wealthiest bachelors around the world.