Between the country's two biggest lottery games, more than $500 million in jackpot money is on the table this week.
After Tuesday night's drawing yielded no tickets that hit all winning numbers, the Mega Millions jackpot has grown to $336 million. Powerball's top prize stands at $193 million.
If you manage to nab the jackpot in either of the next drawings — Wednesday night for Powerball and Friday night for Mega Millions — the first thing to do is take a deep breath and resist the urge to announce your exciting news to the world, experts say.
Instead, consider what's ahead. When you come into a life-changing amount of money, there's more involved than suddenly having a big bank account and deciding what you want to buy.
"With great wealth comes great responsibility," said certified financial planner Jim Shagawat, president of Windfall Wealth Advisors in Paramus, New Jersey.
Here are some key decisions you'll need to make first if you win big.