Anything you want. Yes, either. All, some, or none. Totally up to you.
You won't.
But if you do? You should hire a full-time Financial Adviser to manage it for you...
$40 million could very reliably return you 6% a year without ever getting smaller, so you'd have $2.4M a year to live on and pay his/her salary from, essentially "forever"...
10M safe in CDs only spread out... that means you are at least set so you shouldn't have to work again even if you lose the rest. Gov takes half of what you have, so the other 10M I would invest and trade.
If I were to win $40 million what would I do with it? Invest, stocks or bonds. How much could I keep in a bank account? Just curious.