Take about 1 million and give it to family so they can pay off mortgages etc and take a long vacation, then put the other $49m into a well balanced investment portfolio including some real estate, bonds, dividend stocks and that's pretty much it. At just 5% interest, it would be making $2,450,000 per year, and at that much money you can afford to have the best managers look after your wealth so you should make even more. Like 10%+ over the long term. 10% is 4.9M a year, imagine getting about $100,000 a week just off of interest cause you didn't blow the whole wad to start with.