18668336868670 has 32 divisors (see below), whose sum is σ = 33981112807200. Its totient is φ = 7383313783296.

The previous prime is 18668336868667. The next prime is 18668336868743. The reversal of 18668336868670 is 7686863386681.

It is a congruent number.

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, 73553746 + ... + 73807114.

It is an arithmetic number, because the mean of its divisors is an integer number (1061909775225).

Almost surely, 2^{18668336868670} is an apocalyptic number.

18668336868670 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18668336868670 is a deficient number, since it is larger than the sum of its proper divisors (15312775938530).

18668336868670 is a wasteful number, since it uses less digits than its factorization.

18668336868670 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 336252.

The product of its (nonzero) digits is 2006581248, while the sum is 76.

The spelling of 18668336868670 in words is "eighteen trillion, six hundred sixty-eight billion, three hundred thirty-six million, eight hundred sixty-eight thousand, six hundred seventy".