21134176964772 has 96 divisors (see below), whose sum is σ = 50865294864384. Its totient is φ = 6826011686400.

The previous prime is 21134176964731. The next prime is 21134176964773. The reversal of 21134176964772 is 27746967143112.

It is not an unprimeable number, because it can be changed into a prime (21134176964773) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 218435647 + ... + 218532377.

It is an arithmetic number, because the mean of its divisors is an integer number (529846821504).

Almost surely, 2^{21134176964772} is an apocalyptic number.

It is an amenable number.

21134176964772 is an abundant number, since it is smaller than the sum of its proper divisors (29731117899612).

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

21134176964772 is a wasteful number, since it uses less digits than its factorization.

21134176964772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100649 (or 100647 counting only the distinct ones).

The product of its digits is 21337344, while the sum is 60.

The spelling of 21134176964772 in words is "twenty-one trillion, one hundred thirty-four billion, one hundred seventy-six million, nine hundred sixty-four thousand, seven hundred seventy-two".