18687330045685 has 64 divisors (see below), whose sum is σ = 27536256000000. Its totient is φ = 12135989581632.

The previous prime is 18687330045677. The next prime is 18687330045737. The reversal of 18687330045685 is 58654003378681.

It is not a de Polignac number, because 18687330045685 - 2³ = 18687330045677 is a prime.

It is a super-2 number, since 2×18687330045685² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 107410996 + ... + 107584834.

It is an arithmetic number, because the mean of its divisors is an integer number (430254000000).

Almost surely, 2^{18687330045685} is an apocalyptic number.

It is an amenable number.

18687330045685 is a deficient number, since it is larger than the sum of its proper divisors (8848925954315).

18687330045685 is a wasteful number, since it uses less digits than its factorization.

18687330045685 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 177183 (or 177169 counting only the distinct ones).

The product of its (nonzero) digits is 116121600, while the sum is 64.

The spelling of 18687330045685 in words is "eighteen trillion, six hundred eighty-seven billion, three hundred thirty million, forty-five thousand, six hundred eighty-five".