22640018775 has 24 divisors (see below), whose sum is σ = 40834362624. Its totient is φ = 10976978400.

The previous prime is 22640018771. The next prime is 22640018777. The reversal of 22640018775 is 57781004622.

It is not a de Polignac number, because 22640018775 - 2² = 22640018771 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22640018771) 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, 13720399 + ... + 13722048.

It is an arithmetic number, because the mean of its divisors is an integer number (1701431776).

Almost surely, 2^22640018775 is an apocalyptic number.

22640018775 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

22640018775 is a deficient number, since it is larger than the sum of its proper divisors (18194343849).

22640018775 is a wasteful number, since it uses less digits than its factorization.

22640018775 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27442471 (or 27442466 counting only the distinct ones).

The product of its (nonzero) digits is 188160, while the sum is 42.

The spelling of 22640018775 in words is "twenty-two billion, six hundred forty million, eighteen thousand, seven hundred seventy-five".