220516621165072 has 10 divisors (see below), whose sum is σ = 427250953507358. Its totient is φ = 110258310582528.

The previous prime is 220516621164991. The next prime is 220516621165073. The reversal of 220516621165072 is 270561126615022.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 148817455253776 + 71699165911296 = 12199076^2 + 8467536^2 .

It is not an unprimeable number, because it can be changed into a prime (220516621165073) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6891144411393 + ... + 6891144411424.

Almost surely, 2^{220516621165072} is an apocalyptic number.

It is an amenable number.

220516621165072 is a deficient number, since it is larger than the sum of its proper divisors (206734332342286).

220516621165072 is a wasteful number, since it uses less digits than its factorization.

220516621165072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13782288822825 (or 13782288822819 counting only the distinct ones).

The product of its (nonzero) digits is 604800, while the sum is 46.

The spelling of 220516621165072 in words is "two hundred twenty trillion, five hundred sixteen billion, six hundred twenty-one million, one hundred sixty-five thousand, seventy-two".