22638297887091 has 12 divisors (see below), whose sum is σ = 32703104884632. Its totient is φ = 15090656466816.

The previous prime is 22638297887057. The next prime is 22638297887113. The reversal of 22638297887091 is 19078879283622.

22638297887091 is a `hidden beast` number, since 2 + 2 + 6 + 382 + 97 + 8 + 8 + 70 + 91 = 666.

It is not a de Polignac number, because 22638297887091 - 2¹⁸ = 22638297624947 is a prime.

It is a hoax number, since the sum of its digits (72) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (22638297187091) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 128417406 + ... + 128593571.

It is an arithmetic number, because the mean of its divisors is an integer number (2725258740386).

Almost surely, 2^{22638297887091} is an apocalyptic number.

22638297887091 is a deficient number, since it is larger than the sum of its proper divisors (10064806997541).

22638297887091 is a wasteful number, since it uses less digits than its factorization.

22638297887091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 257020770 (or 257020767 counting only the distinct ones).

The product of its (nonzero) digits is 292626432, while the sum is 72.

The spelling of 22638297887091 in words is "twenty-two trillion, six hundred thirty-eight billion, two hundred ninety-seven million, eight hundred eighty-seven thousand, ninety-one".