21534413503504 has 40 divisors (see below), whose sum is σ = 45554460042240. Its totient is φ = 9780081475200.

The previous prime is 21534413503459. The next prime is 21534413503633. The reversal of 21534413503504 is 40530531443512.

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, 51593424 + ... + 52009135.

It is an arithmetic number, because the mean of its divisors is an integer number (1138861501056).

Almost surely, 2^{21534413503504} is an apocalyptic number.

It is an amenable number.

21534413503504 is an abundant number, since it is smaller than the sum of its proper divisors (24020046538736).

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

21534413503504 is a wasteful number, since it uses less digits than its factorization.

21534413503504 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103603759 (or 103603753 counting only the distinct ones).

The product of its (nonzero) digits is 432000, while the sum is 40.

The spelling of 21534413503504 in words is "twenty-one trillion, five hundred thirty-four billion, four hundred thirteen million, five hundred three thousand, five hundred four".