22564401500 has 24 divisors (see below), whose sum is σ = 49280653968. Its totient is φ = 9025760400.

The previous prime is 22564401479. The next prime is 22564401527. The reversal of 22564401500 is 510446522.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22563902 + ... + 22564901.

It is an arithmetic number, because the mean of its divisors is an integer number (2053360582).

Almost surely, 2^22564401500 is an apocalyptic number.

22564401500 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22564401500 is an abundant number, since it is smaller than the sum of its proper divisors (26716252468).

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

22564401500 is a wasteful number, since it uses less digits than its factorization.

22564401500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45128822 (or 45128810 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 29.

The spelling of 22564401500 in words is "twenty-two billion, five hundred sixty-four million, four hundred one thousand, five hundred".