21651412710604 has 96 divisors (see below), whose sum is σ = 41073135409152. Its totient is φ = 9964963008000.

The previous prime is 21651412710533. The next prime is 21651412710623. The reversal of 21651412710604 is 40601721415612.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 119490234 + ... + 119671294.

It is an arithmetic number, because the mean of its divisors is an integer number (427845160512).

Almost surely, 2^{21651412710604} is an apocalyptic number.

It is an amenable number.

21651412710604 is a deficient number, since it is larger than the sum of its proper divisors (19421722698548).

21651412710604 is a wasteful number, since it uses less digits than its factorization.

21651412710604 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 181727 (or 181725 counting only the distinct ones).

The product of its (nonzero) digits is 80640, while the sum is 40.

The spelling of 21651412710604 in words is "twenty-one trillion, six hundred fifty-one billion, four hundred twelve million, seven hundred ten thousand, six hundred four".