21415532504 has 32 divisors (see below), whose sum is σ = 40304768400. Its totient is φ = 10667650560.

The previous prime is 21415532497. The next prime is 21415532521. The reversal of 21415532504 is 40523551412.

It is a congruent number.

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, 4108652 + ... + 4113860.

Almost surely, 2^21415532504 is an apocalyptic number.

It is an amenable number.

21415532504 is a deficient number, since it is larger than the sum of its proper divisors (18889235896).

21415532504 is a wasteful number, since it uses less digits than its factorization.

21415532504 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7043 (or 7039 counting only the distinct ones).

The product of its (nonzero) digits is 24000, while the sum is 32.

The spelling of 21415532504 in words is "twenty-one billion, four hundred fifteen million, five hundred thirty-two thousand, five hundred four".