18556826716704 has 96 divisors (see below), whose sum is σ = 49186322841600. Its totient is φ = 6125381180672.

The previous prime is 18556826716663. The next prime is 18556826716741. The reversal of 18556826716704 is 40761762865581.

It is a tau number, because it is divible by the number of its divisors (96).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25766497 + ... + 26476895.

It is an arithmetic number, because the mean of its divisors is an integer number (512357529600).

Almost surely, 2^{18556826716704} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18556826716704, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24593161420800).

18556826716704 is an abundant number, since it is smaller than the sum of its proper divisors (30629496124896).

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

18556826716704 is a wasteful number, since it uses less digits than its factorization.

18556826716704 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 713062 (or 713054 counting only the distinct ones).

The product of its (nonzero) digits is 135475200, while the sum is 66.

The spelling of 18556826716704 in words is "eighteen trillion, five hundred fifty-six billion, eight hundred twenty-six million, seven hundred sixteen thousand, seven hundred four".