21748515275832 has 64 divisors (see below), whose sum is σ = 57302647171200. Its totient is φ = 6859586724480.

The previous prime is 21748515275687. The next prime is 21748515275857. The reversal of 21748515275832 is 23857251584712.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28671978 + ... + 29420729.

It is an arithmetic number, because the mean of its divisors is an integer number (895353862050).

Almost surely, 2^{21748515275832} is an apocalyptic number.

It is an amenable number.

21748515275832 is an abundant number, since it is smaller than the sum of its proper divisors (35554131895368).

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

21748515275832 is a wasteful number, since it uses less digits than its factorization.

21748515275832 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58093556 (or 58093552 counting only the distinct ones).

The product of its digits is 37632000, while the sum is 60.

The spelling of 21748515275832 in words is "twenty-one trillion, seven hundred forty-eight billion, five hundred fifteen million, two hundred seventy-five thousand, eight hundred thirty-two".