626636468428664 has 32 divisors (see below), whose sum is σ = 1202273877000240. Its totient is φ = 306030176793600.

The previous prime is 626636468428561. The next prime is 626636468428693. The reversal of 626636468428664 is 466824864636626.

It is a Smith number, since the sum of its digits (77) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 63130274 + ... + 72378894.

Almost surely, 2^{626636468428664} is an apocalyptic number.

It is an amenable number.

626636468428664 is a deficient number, since it is larger than the sum of its proper divisors (575637408571576).

626636468428664 is a wasteful number, since it uses less digits than its factorization.

626636468428664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9445631 (or 9445627 counting only the distinct ones).

The product of its digits is 13759414272, while the sum is 77.

The spelling of 626636468428664 in words is "six hundred twenty-six trillion, six hundred thirty-six billion, four hundred sixty-eight million, four hundred twenty-eight thousand, six hundred sixty-four".