18013388189177 has 2 divisors, whose sum is σ = 18013388189178. Its totient is φ = 18013388189176.

The previous prime is 18013388189029. The next prime is 18013388189189. The reversal of 18013388189177 is 77198188331081.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 15873124523881 + 2140263665296 = 3984109^2 + 1462964^2 .

It is a cyclic number.

It is not a de Polignac number, because 18013388189177 - 2³⁰ = 18012314447353 is a prime.

It is not a weakly prime, because it can be changed into another prime (18013388189777) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9006694094588 + 9006694094589.

It is an arithmetic number, because the mean of its divisors is an integer number (9006694094589).

Almost surely, 2^{18013388189177} is an apocalyptic number.

It is an amenable number.

18013388189177 is a deficient number, since it is larger than the sum of its proper divisors (1).

18013388189177 is an equidigital number, since it uses as much as digits as its factorization.

18013388189177 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 16257024, while the sum is 65.

The spelling of 18013388189177 in words is "eighteen trillion, thirteen billion, three hundred eighty-eight million, one hundred eighty-nine thousand, one hundred seventy-seven".