22506564157340 has 24 divisors (see below), whose sum is σ = 47969214356112. Its totient is φ = 8868258115200.

The previous prime is 22506564157327. The next prime is 22506564157361. The reversal of 22506564157340 is 4375146560522.

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, 8397970361 + ... + 8397973040.

It is an arithmetic number, because the mean of its divisors is an integer number (1998717264838).

Almost surely, 2^{22506564157340} is an apocalyptic number.

22506564157340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22506564157340 is an abundant number, since it is smaller than the sum of its proper divisors (25462650198772).

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

22506564157340 is a wasteful number, since it uses less digits than its factorization.

22506564157340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16795943477 (or 16795943475 counting only the distinct ones).

The product of its (nonzero) digits is 6048000, while the sum is 50.

The spelling of 22506564157340 in words is "twenty-two trillion, five hundred six billion, five hundred sixty-four million, one hundred fifty-seven thousand, three hundred forty".