21792534372 has 72 divisors (see below), whose sum is σ = 63533870400. Its totient is φ = 6169307328.

The previous prime is 21792534347. The next prime is 21792534419. The reversal of 21792534372 is 27343529712.

21792534372 is a `hidden beast` number, since 21 + 7 + 9 + 253 + 4 + 372 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 369222 + ... + 424157.

Almost surely, 2^21792534372 is an apocalyptic number.

It is an amenable number.

21792534372 is an abundant number, since it is smaller than the sum of its proper divisors (41741336028).

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

21792534372 is a wasteful number, since it uses less digits than its factorization.

21792534372 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 793505 (or 793500 counting only the distinct ones).

The product of its digits is 635040, while the sum is 45.

The spelling of 21792534372 in words is "twenty-one billion, seven hundred ninety-two million, five hundred thirty-four thousand, three hundred seventy-two".