I would buy a medium sized publishing company and start publishing a horribly cynical and slanderous weekly with a ridiculously high circulation, in which I tell all my enemies what I really think of them. I would also print cryptic injokes about them that only I would get. It would be highly unprofitable and probably unreadable for 99% of the population, but I wouldn’t care. It would be my legacy, and I would have it printed on extra-durable paper so that it would be the only newspaper to survive, as ragged copies treasured by antiquaries, to the year 5000. By that time, all archaeologists would base their theories about our age on the surviving fragments of my paper, and hence, on my opinion. I think this would be a very cool form of immortality, though the archaeologists in question, and the contemporary victims of my pen, probably would disagree.
1st I would get a financial adviser to figure out exactly what I want to do accomplish with this money. Then I would get the hell out of town and enjoy life. Of course after I paid off all of my bills and helped out close family members, and in all honestly donate to some charities. If I was blessed to win all of that money it’s my duty to help out those in need. I know what it feels like not to have basic things like food and electricity, so I would definitely start some type of foundation to help the less fortunate. I wouldn’t be one of those sad stories I’m VERY good with managing money. Good luck.