Should be way more the just 560 zeroes. 10^560 is 1 followed by 560 zeroes. 10^560 is just 10^(10*56), not even 10^(10^56).
10^3 is 1000. Notice that it's just 3 zeroes. So 10^(10^3) would be 10^(1000), which would be a number with 1000 zeroes!
If 10^(10^3) has 1000 zeroes, how many zeroes do you think 10^(10^56) has?
10^(10^56) is 10^(1 then 56 zeroes). This step here is hard to rap your mind around because I can't easily write this number.
Then we need to take another step and write this new number we can't easily comprehend, as an exponent of another 10.
4 ≈ One