It depends. There are two options for collecting lottery winning; all at once or parceled out over 30 years. If you take the lump sum, you get ~70% before taxes. If you take the 30 year payout, you received the entire jackpot over the course of time and "only" pay normal taxes for the annual disbursement.
Gotcha, well still more than enough to live on. Maybe you could buy Obsidian with that kind of change, hmm...
1 billion now. https://canoe.com/news/world/americas-mega-millions-lottery-jackpot-hits-us1-billion