626640228204 has 24 divisors (see below), whose sum is σ = 1466233413120. Its totient is φ = 208298235984.

The previous prime is 626640228191. The next prime is 626640228229. The reversal of 626640228204 is 402822046626.

It is a super-2 number, since 2×626640228204² (a number of 24 digits) contains 22 as substring.

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, 72725524 + ... + 72734139.

It is an arithmetic number, because the mean of its divisors is an integer number (61093058880).

Almost surely, 2^626640228204 is an apocalyptic number.

It is an amenable number.

626640228204 is an abundant number, since it is smaller than the sum of its proper divisors (839593184916).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

626640228204 is a wasteful number, since it uses less digits than its factorization.

626640228204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 145460029 (or 145460027 counting only the distinct ones).

The product of its (nonzero) digits is 442368, while the sum is 42.

The spelling of 626640228204 in words is "six hundred twenty-six billion, six hundred forty million, two hundred twenty-eight thousand, two hundred four".