You are betting that the government will honor its obligation and make the distribution each of the next twenty years.
I suppose real estate would be the safest way to store the wealth, along with a few bags of gold coins.
Illinois stopped paying out because of the budget. They are also wondering why ticket sales are off.
You’re also betting that the dollar will be worth anything in the future plus it’s earning nothing while waiting for you to get a check every year.
Powerball is 26 payments, not 20. They buy an annuity in your name - hard to see how they have any ability to not pay it out, the money shouldn’t even pass through them once you’ve claimed the prize.