22712891688 has 96 divisors (see below), whose sum is σ = 66331137600. Its totient is φ = 6997536000.

The previous prime is 22712891681. The next prime is 22712891717. The reversal of 22712891688 is 88619821722.

22712891688 is a `hidden beast` number, since 2 + 271 + 289 + 16 + 88 = 666.

It is not an unprimeable number, because it can be changed into a prime (22712891681) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 146388 + ... + 258563.

It is an arithmetic number, because the mean of its divisors is an integer number (690949350).

Almost surely, 2^22712891688 is an apocalyptic number.

It is an amenable number.

22712891688 is an abundant number, since it is smaller than the sum of its proper divisors (43618245912).

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

22712891688 is a wasteful number, since it uses less digits than its factorization.

22712891688 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 405023 (or 405016 counting only the distinct ones).

The product of its digits is 1548288, while the sum is 54.

The spelling of 22712891688 in words is "twenty-two billion, seven hundred twelve million, eight hundred ninety-one thousand, six hundred eighty-eight".