18711052177 has 2 divisors, whose sum is σ = 18711052178. Its totient is φ = 18711052176.

The previous prime is 18711052163. The next prime is 18711052187. The reversal of 18711052177 is 77125011781.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11314364161 + 7396688016 = 106369^2 + 86004^2 .

It is a cyclic number.

It is not a de Polignac number, because 18711052177 - 2¹¹ = 18711050129 is a prime.

It is not a weakly prime, because it can be changed into another prime (18711052127) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9355526088 + 9355526089.

It is an arithmetic number, because the mean of its divisors is an integer number (9355526089).

Almost surely, 2^18711052177 is an apocalyptic number.

It is an amenable number.

18711052177 is a deficient number, since it is larger than the sum of its proper divisors (1).

18711052177 is an equidigital number, since it uses as much as digits as its factorization.

18711052177 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 27440, while the sum is 40.

The spelling of 18711052177 in words is "eighteen billion, seven hundred eleven million, fifty-two thousand, one hundred seventy-seven".