18722824768 has 28 divisors (see below), whose sum is σ = 37160306172. Its totient is φ = 9359598080.

The previous prime is 18722824753. The next prime is 18722824793. The reversal of 18722824768 is 86742822781.

It can be written as a sum of positive squares in 2 ways, for example, as 12788895744 + 5933929024 = 113088^2 + 77032^2 .

It is a Smith number, since the sum of its digits (55) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 341946 + ... + 392902.

Almost surely, 2^18722824768 is an apocalyptic number.

It is an amenable number.

18722824768 is a deficient number, since it is larger than the sum of its proper divisors (18437481404).

18722824768 is an equidigital number, since it uses as much as digits as its factorization.

18722824768 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56710 (or 56700 counting only the distinct ones).

The product of its digits is 4816896, while the sum is 55.

The spelling of 18722824768 in words is "eighteen billion, seven hundred twenty-two million, eight hundred twenty-four thousand, seven hundred sixty-eight".