21952537451136 has 96 divisors (see below), whose sum is σ = 63558264169920. Its totient is φ = 7272619706880.

The previous prime is 21952537451087. The next prime is 21952537451171. The reversal of 21952537451136 is 63115473525912.

21952537451136 is a `hidden beast` number, since 2 + 1 + 9 + 5 + 2 + 53 + 7 + 451 + 136 = 666.

It is a tau number, because it is divible by the number of its divisors (96).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 58266280 + ... + 58641831.

It is an arithmetic number, because the mean of its divisors is an integer number (662065251770).

Almost surely, 2^{21952537451136} is an apocalyptic number.

It is an amenable number.

21952537451136 is an abundant number, since it is smaller than the sum of its proper divisors (41605726718784).

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

21952537451136 is a wasteful number, since it uses less digits than its factorization.

21952537451136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116908294 (or 116908279 counting only the distinct ones).

The product of its digits is 6804000, while the sum is 54.

The spelling of 21952537451136 in words is "twenty-one trillion, nine hundred fifty-two billion, five hundred thirty-seven million, four hundred fifty-one thousand, one hundred thirty-six".