18797521704 has 64 divisors (see below), whose sum is σ = 50873840640. Its totient is φ = 5753552640.

The previous prime is 18797521679. The next prime is 18797521723. The reversal of 18797521704 is 40712579781.

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, 98127 + ... + 217310.

It is an arithmetic number, because the mean of its divisors is an integer number (794903760).

Almost surely, 2^18797521704 is an apocalyptic number.

It is an amenable number.

18797521704 is an abundant number, since it is smaller than the sum of its proper divisors (32076318936).

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

18797521704 is a wasteful number, since it uses less digits than its factorization.

18797521704 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 315650 (or 315646 counting only the distinct ones).

The product of its (nonzero) digits is 987840, while the sum is 51.

The spelling of 18797521704 in words is "eighteen billion, seven hundred ninety-seven million, five hundred twenty-one thousand, seven hundred four".