18368705003887 has 32 divisors (see below), whose sum is σ = 22583679713280. Its totient is φ = 14588343116640.

The previous prime is 18368705003863. The next prime is 18368705003923. The reversal of 18368705003887 is 78830050786381.

It is a cyclic number.

It is not a de Polignac number, because 18368705003887 - 2³⁵ = 18334345265519 is a prime.

It is a Smith number, since the sum of its digits (64) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18368705003587) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7890562 + ... + 9949792.

It is an arithmetic number, because the mean of its divisors is an integer number (705739991040).

Almost surely, 2^{18368705003887} is an apocalyptic number.

18368705003887 is a deficient number, since it is larger than the sum of its proper divisors (4214974709393).

18368705003887 is a wasteful number, since it uses less digits than its factorization.

18368705003887 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2060731.

The product of its (nonzero) digits is 54190080, while the sum is 64.

The spelling of 18368705003887 in words is "eighteen trillion, three hundred sixty-eight billion, seven hundred five million, three thousand, eight hundred eighty-seven".