18377634668 has 12 divisors (see below), whose sum is σ = 32288993352. Its totient is φ = 9152208000.

The previous prime is 18377634637. The next prime is 18377634701. The reversal of 18377634668 is 86643677381.

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, 9151205 + ... + 9153212.

It is an arithmetic number, because the mean of its divisors is an integer number (2690749446).

Almost surely, 2^18377634668 is an apocalyptic number.

It is an amenable number.

18377634668 is a deficient number, since it is larger than the sum of its proper divisors (13911358684).

18377634668 is a wasteful number, since it uses less digits than its factorization.

18377634668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18304672 (or 18304670 counting only the distinct ones).

The product of its digits is 24385536, while the sum is 59.

The spelling of 18377634668 in words is "eighteen billion, three hundred seventy-seven million, six hundred thirty-four thousand, six hundred sixty-eight".