22531240656 has 60 divisors (see below), whose sum is σ = 63191392992. Its totient is φ = 7494308928.

The previous prime is 22531240651. The next prime is 22531240679. The reversal of 22531240656 is 65604213522.

22531240656 is a `hidden beast` number, since 22 + 531 + 2 + 40 + 65 + 6 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 22531240656.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22531240651) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 100276 + ... + 234771.

Almost surely, 2^22531240656 is an apocalyptic number.

It is an amenable number.

22531240656 is an abundant number, since it is smaller than the sum of its proper divisors (40660152336).

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

22531240656 is a wasteful number, since it uses less digits than its factorization.

22531240656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 335528 (or 335519 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 36.

The spelling of 22531240656 in words is "twenty-two billion, five hundred thirty-one million, two hundred forty thousand, six hundred fifty-six".