You have the chance when the Mega Millions lottery numbers are drawn tonight, July 29.

The problem: Chances are you aren’t going to win. But we understand that, right?

Lew Lefton, Georgia Tech mathematician, crunches big calculations for a living.

With five white balls out of a drum containing 70 balls, and one red ball drawn from a drum with 25 red balls, Lefton says there are an astronomical 302,575,350 possible winning combinations. You’ll have to pick the right one to win big.

Also astronomical is the payout. Many would be over the moon with a $1 million payout, but $1 billion? Consider this for perspective: 1 million seconds is about 11 days; 1 billion seconds is about 31 years!

While you can’t do anything to improve your odds of winning, you can decrease the likelihood of having to share that jackpot.

“Play numbers higher than 31,” Lefton says.

Many people play birthday numbers, so choosing higher, less popular numbers means you’re less likely to have to split the winnings.

Also, people statistically choose odd numbers more often. So, choosing high, even numbers may be your best bet, according to Lefton.

What’s even more astronomical? The size of the U.S. economy is $23 trillion. Georgia Tech economist Tibor Besedes says a billion-dollar jackpot is a drop in the bucket.  “About 0.004% of the economy.”

Because the winner will likely spend their payout on a variety of items, lottery jackpots have little ripple effect on the economy as a whole.

“This wouldn’t have the impact on the level of a business investing $1 billion in the state of Georgia on a new production facility.”

Unless this jackpot winner has just that kind of investment in mind.