https://www.usamega.com/powerball-jackpot.asp

It doesn't seem to say anything about dying early, though.

Assuming a $1.5B jackpot:


Louisiana: 5% State Tax - $2,644,000 for annuity - $49,175,000 for lump sum
Your average net per year: $37,016,000 annuity Your net payout: $688,450,000 lump
After 30 payments: $1,110,480,000 annuity


Cheers,
Scott.
(Presumably the first thing the winner will do is talk to a tax advisor and learn the skinny for their particular circumstances.)