21112557676371 has 96 divisors (see below), whose sum is σ = 37345951319040. Its totient is φ = 11230785561600.

The previous prime is 21112557676349. The next prime is 21112557676391. The reversal of 21112557676371 is 17367675521112.

21112557676371 is a `hidden beast` number, since 2 + 1 + 1 + 1 + 2 + 5 + 576 + 7 + 63 + 7 + 1 = 666.

It is not a de Polignac number, because 21112557676371 - 2¹⁸ = 21112557414227 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21112557676321) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 23863836 + ... + 24732726.

It is an arithmetic number, because the mean of its divisors is an integer number (389020326240).

Almost surely, 2^{21112557676371} is an apocalyptic number.

21112557676371 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

21112557676371 is a deficient number, since it is larger than the sum of its proper divisors (16233393642669).

21112557676371 is a wasteful number, since it uses less digits than its factorization.

21112557676371 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 869377 (or 869374 counting only the distinct ones).

The product of its digits is 3704400, while the sum is 54.

The spelling of 21112557676371 in words is "twenty-one trillion, one hundred twelve billion, five hundred fifty-seven million, six hundred seventy-six thousand, three hundred seventy-one".