131715666271177 has 2 divisors, whose sum is σ = 131715666271178. Its totient is φ = 131715666271176.

The previous prime is 131715666271151. The next prime is 131715666271201. The reversal of 131715666271177 is 771172666517131.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 125071768235401 + 6643898035776 = 11183549^2 + 2577576^2 .

It is a cyclic number.

It is not a de Polignac number, because 131715666271177 - 2¹¹ = 131715666269129 is a prime.

It is not a weakly prime, because it can be changed into another prime (131715666271877) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65857833135588 + 65857833135589.

It is an arithmetic number, because the mean of its divisors is an integer number (65857833135589).

Almost surely, 2^{131715666271177} is an apocalyptic number.

It is an amenable number.

131715666271177 is a deficient number, since it is larger than the sum of its proper divisors (1).

131715666271177 is an equidigital number, since it uses as much as digits as its factorization.

131715666271177 is an evil number, because the sum of its binary digits is even.

The product of its digits is 15558480, while the sum is 61.

The spelling of 131715666271177 in words is "one hundred thirty-one trillion, seven hundred fifteen billion, six hundred sixty-six million, two hundred seventy-one thousand, one hundred seventy-seven".