18668700351685 has 8 divisors (see below), whose sum is σ = 22417072985376. Its totient is φ = 14925205239120.

The previous prime is 18668700351661. The next prime is 18668700351703. The reversal of 18668700351685 is 58615300786681.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 18668700351685 - 2²⁷ = 18668566133957 is a prime.

It is a Duffinian number.

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, 1219371859 + ... + 1219387168.

It is an arithmetic number, because the mean of its divisors is an integer number (2802134123172).

Almost surely, 2^{18668700351685} is an apocalyptic number.

It is an amenable number.

18668700351685 is a deficient number, since it is larger than the sum of its proper divisors (3748372633691).

18668700351685 is a wasteful number, since it uses less digits than its factorization.

18668700351685 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2438760563.

The product of its (nonzero) digits is 58060800, while the sum is 64.

The spelling of 18668700351685 in words is "eighteen trillion, six hundred sixty-eight billion, seven hundred million, three hundred fifty-one thousand, six hundred eighty-five".