Seeing all these deals and billion dollar aquisitions including some comments on life changing money etc, just wondering what is your number ? It is not necessarily a number to retire, but a number that will give you the financial freedom to do whatever you want. If that means working at a walmart because you want, then so be it. The differentiator is "want" and not "need".
The numbers are in USD. Of course, it could depend on where you live. So feel free to convert it into your local currency, consider inflation rate etc etc.
EDIT: To clarify, this number is the "cash" at hand and not your net worth. So if you own a million fb shares but have not liquidated any, it does not count.
Obviously the lump sum would probably be able to yield that sort of money in interest, but the interesting thing is that it should be much easier to secure the monthly passive income than it would the lump sum.