20564502200104 has 8 divisors (see below), whose sum is σ = 38558441625210. Its totient is φ = 10282251100048.

The previous prime is 20564502200089. The next prime is 20564502200213. The reversal of 20564502200104 is 40100220546502.

It can be written as a sum of positive squares in only one way, i.e., 12898857884004 + 7665644316100 = 3591498^2 + 2768690^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×20564502200104² (a number of 27 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1285281387499 + ... + 1285281387514.

Almost surely, 2^{20564502200104} is an apocalyptic number.

It is an amenable number.

20564502200104 is a deficient number, since it is larger than the sum of its proper divisors (17993939425106).

20564502200104 is a wasteful number, since it uses less digits than its factorization.

20564502200104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2570562775019 (or 2570562775015 counting only the distinct ones).

The product of its (nonzero) digits is 19200, while the sum is 31.

Adding to 20564502200104 its reverse (40100220546502), we get a palindrome (60664722746606).

The spelling of 20564502200104 in words is "twenty trillion, five hundred sixty-four billion, five hundred two million, two hundred thousand, one hundred four".