18668683368502 has 16 divisors (see below), whose sum is σ = 30152808634320. Its totient is φ = 8636360002048.

The previous prime is 18668683368479. The next prime is 18668683368563. The reversal of 18668683368502 is 20586338686681.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4653209203 + ... + 4653213214.

It is an arithmetic number, because the mean of its divisors is an integer number (1884550539645).

Almost surely, 2^{18668683368502} is an apocalyptic number.

18668683368502 is a deficient number, since it is larger than the sum of its proper divisors (11484125265818).

18668683368502 is a wasteful number, since it uses less digits than its factorization.

18668683368502 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9306422495.

The product of its (nonzero) digits is 477757440, while the sum is 70.

The spelling of 18668683368502 in words is "eighteen trillion, six hundred sixty-eight billion, six hundred eighty-three million, three hundred sixty-eight thousand, five hundred two".