21507536470632 has 32 divisors (see below), whose sum is σ = 53909229818880. Its totient is φ = 7150460337920.

The previous prime is 21507536470577. The next prime is 21507536470729. The reversal of 21507536470632 is 23607463570512.

It is a happy number.

It is a hoax number, since the sum of its digits (51) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1169895969 + ... + 1169914352.

It is an arithmetic number, because the mean of its divisors is an integer number (1684663431840).

Almost surely, 2^{21507536470632} is an apocalyptic number.

It is an amenable number.

21507536470632 is an abundant number, since it is smaller than the sum of its proper divisors (32401693348248).

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

21507536470632 is a wasteful number, since it uses less digits than its factorization.

21507536470632 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2339810713 (or 2339810709 counting only the distinct ones).

The product of its (nonzero) digits is 6350400, while the sum is 51.

The spelling of 21507536470632 in words is "twenty-one trillion, five hundred seven billion, five hundred thirty-six million, four hundred seventy thousand, six hundred thirty-two".