18339514268917 has 2 divisors, whose sum is σ = 18339514268918. Its totient is φ = 18339514268916.

The previous prime is 18339514268903. The next prime is 18339514268981. The reversal of 18339514268917 is 71986241593381.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13499201863876 + 4840312405041 = 3674126^2 + 2200071^2 .

It is a cyclic number.

It is not a de Polignac number, because 18339514268917 - 2³⁵ = 18305154530549 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18339514238917) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9169757134458 + 9169757134459.

It is an arithmetic number, because the mean of its divisors is an integer number (9169757134459).

Almost surely, 2^{18339514268917} is an apocalyptic number.

It is an amenable number.

18339514268917 is a deficient number, since it is larger than the sum of its proper divisors (1).

18339514268917 is an equidigital number, since it uses as much as digits as its factorization.

18339514268917 is an evil number, because the sum of its binary digits is even.

The product of its digits is 78382080, while the sum is 67.

The spelling of 18339514268917 in words is "eighteen trillion, three hundred thirty-nine billion, five hundred fourteen million, two hundred sixty-eight thousand, nine hundred seventeen".