Well its s matter of fact, that satosho mined the genesis block and also a matter of fact that he is for sure the person who mined a lot of blocks after that aswell... so its likelay as the difficulty of bitcoin was 1 (lowest possible value) for all blocks up until #32255 blockchain.info so its very likely that satoshi has a lot of bitcoins there but I wouldnt bet a penny on an exact number as nobody can know this.... we have limited data BUT we could find out more if we had the hashrate of every block as this would give us an overview of all the miners (like when genesis block is mined with 10kh/s and the next 1000 blocks also and on block 1001 it goes to 17kh/s then you can be sure that the blocks 1-1000 belong to satoshi) but dont ask me how to extract this information from the blockchain or if there is even a way to do so...