i think there is only one address with that amount right now
https://blockchain.info/address/3Nxwenay9Z8Lc9JBiywExpnEFiLp6Afp8v
its a multisig. so unless you had all the privkeys .. then you got no chance
It's $50M. And besides, it's a hypothetical question. Hypothetically one address can contain 1M bitcoins.
Not sure how one would cash out that much, though. That much money coming out of nowhere is going to be noticed.
How much do you recon could be cashed out without causing such commotion?
None... the great thing about bitcoin is blockchain. So it is easy to see how much is recieved and sent. I suspect as soon as you started taking they would notice... and track it. And some could argue you might be able to "wash" it again you would " lack moral character." in Danny's great terms to do so.
Also whoever has that would be very well off. I imagine there would be substantial reward for you... so you eventually get caught I would think.