22556687956 has 12 divisors (see below), whose sum is σ = 43062768000. Its totient is φ = 10253039960.

The previous prime is 22556687897. The next prime is 22556687969. The reversal of 22556687956 is 65978665522.

It is a junction number, because it is equal to n+sod(n) for n = 22556687894 and 22556687903.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 256325956 + ... + 256326043.

It is an arithmetic number, because the mean of its divisors is an integer number (3588564000).

Almost surely, 2^22556687956 is an apocalyptic number.

It is an amenable number.

22556687956 is a deficient number, since it is larger than the sum of its proper divisors (20506080044).

22556687956 is a wasteful number, since it uses less digits than its factorization.

22556687956 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 512652014 (or 512652012 counting only the distinct ones).

The product of its digits is 54432000, while the sum is 61.

The spelling of 22556687956 in words is "twenty-two billion, five hundred fifty-six million, six hundred eighty-seven thousand, nine hundred fifty-six".