22638500257464 has 144 divisors (see below), whose sum is σ = 76809197457720. Its totient is φ = 5970593462400.

The previous prime is 22638500257391. The next prime is 22638500257519. The reversal of 22638500257464 is 46475200583622.

22638500257464 is a `hidden beast` number, since 2 + 2 + 6 + 3 + 8 + 5 + 0 + 0 + 2 + 574 + 64 = 666.

It is a super-2 number, since 2×22638500257464² (a number of 28 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 22638500257464.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 246754462 + ... + 246846189.

Almost surely, 2^{22638500257464} is an apocalyptic number.

22638500257464 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

22638500257464 is an abundant number, since it is smaller than the sum of its proper divisors (54170697200256).

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

22638500257464 is a wasteful number, since it uses less digits than its factorization.

22638500257464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 493600690 (or 493600676 counting only the distinct ones).

The product of its (nonzero) digits is 19353600, while the sum is 54.

The spelling of 22638500257464 in words is "twenty-two trillion, six hundred thirty-eight billion, five hundred million, two hundred fifty-seven thousand, four hundred sixty-four".