6564626264656 has 20 divisors (see below), whose sum is σ = 12989579631552. Its totient is φ = 3212476682336.

The previous prime is 6564626264653. The next prime is 6564626264689.

6564626264656 is nontrivially palindromic in base 10.

It is a super-2 number, since 2×6564626264656² (a number of 26 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6564626264653) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4364777350 + ... + 4364778853.

Almost surely, 2^{6564626264656} is an apocalyptic number.

It is an amenable number.

6564626264656 is a deficient number, since it is larger than the sum of its proper divisors (6424953366896).

6564626264656 is a wasteful number, since it uses less digits than its factorization.

6564626264656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8729556258 (or 8729556252 counting only the distinct ones).

The product of its digits is 447897600, while the sum is 64.

The spelling of 6564626264656 in words is "six trillion, five hundred sixty-four billion, six hundred twenty-six million, two hundred sixty-four thousand, six hundred fifty-six".