If I interperted the other posters correctly, it’s more like 24% tax. He only gets half the total if taken as a lump sum rather than an anuity. In other words, he can have $116.05M (pretax) today or 11.605M annually for twenty years. (11.605 x 20 = 132.1). After tax, 116.05M is 87.5M with 24% taxes. I’d jump on it rather than getting paid in 0bama dollars in 2029, with God-knows-what tax rate.
There is a way around the taxes if you want to be devious. Give the unclaimed ticket to someone you trust in Canada who then goes on to claim the prize. Lottery winnings in Canada even if won in the US are tax free. There would be a witholding tax by the US but a smart accountant will be able to reclaim that at the first filing of taxes the following year in Canada due to the tax treaty between the two nations. I am available as a trustworthy person living in Canada...for a small fee of course. :)