18888360018959 has 2 divisors, whose sum is σ = 18888360018960. Its totient is φ = 18888360018958.

The previous prime is 18888360018949. The next prime is 18888360018971. The reversal of 18888360018959 is 95981006388881.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 18888360018959 - 2²⁸ = 18888091583503 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18888360018919) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9444180009479 + 9444180009480.

It is an arithmetic number, because the mean of its divisors is an integer number (9444180009480).

Almost surely, 2^{18888360018959} is an apocalyptic number.

18888360018959 is a deficient number, since it is larger than the sum of its proper divisors (1).

18888360018959 is an equidigital number, since it uses as much as digits as its factorization.

18888360018959 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 238878720, while the sum is 74.

The spelling of 18888360018959 in words is "eighteen trillion, eight hundred eighty-eight billion, three hundred sixty million, eighteen thousand, nine hundred fifty-nine".