18091676417489 has 2 divisors, whose sum is σ = 18091676417490. Its totient is φ = 18091676417488.

The previous prime is 18091676417443. The next prime is 18091676417533. The reversal of 18091676417489 is 98471467619081.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11506206726400 + 6585469691089 = 3392080^2 + 2566217^2 .

It is a cyclic number.

It is not a de Polignac number, because 18091676417489 - 2⁴⁴ = 499490373073 is a prime.

It is not a weakly prime, because it can be changed into another prime (18091676419489) 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, 9045838208744 + 9045838208745.

It is an arithmetic number, because the mean of its divisors is an integer number (9045838208745).

Almost surely, 2^{18091676417489} is an apocalyptic number.

It is an amenable number.

18091676417489 is a deficient number, since it is larger than the sum of its proper divisors (1).

18091676417489 is an equidigital number, since it uses as much as digits as its factorization.

18091676417489 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 146313216, while the sum is 71.

The spelling of 18091676417489 in words is "eighteen trillion, ninety-one billion, six hundred seventy-six million, four hundred seventeen thousand, four hundred eighty-nine".