18256662464 has 28 divisors (see below), whose sum is σ = 36471225000. Its totient is φ = 9067062528.

The previous prime is 18256662443. The next prime is 18256662481. The reversal of 18256662464 is 46426665281.

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 947714 + ... + 966785.

It is an arithmetic number, because the mean of its divisors is an integer number (1302543750).

Almost surely, 2^18256662464 is an apocalyptic number.

It is an amenable number.

18256662464 is a deficient number, since it is larger than the sum of its proper divisors (18214562536).

18256662464 is a wasteful number, since it uses less digits than its factorization.

18256662464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1914660 (or 1914650 counting only the distinct ones).

The product of its digits is 3317760, while the sum is 50.

The spelling of 18256662464 in words is "eighteen billion, two hundred fifty-six million, six hundred sixty-two thousand, four hundred sixty-four".