131330797799177 has 2 divisors, whose sum is σ = 131330797799178. Its totient is φ = 131330797799176.

The previous prime is 131330797799171. The next prime is 131330797799197. The reversal of 131330797799177 is 771997797033131.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 83410885297936 + 47919912501241 = 9132956^2 + 6922421^2 .

It is a cyclic number.

It is not a de Polignac number, because 131330797799177 - 2¹⁸ = 131330797537033 is a prime.

It is not a weakly prime, because it can be changed into another prime (131330797799171) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65665398899588 + 65665398899589.

It is an arithmetic number, because the mean of its divisors is an integer number (65665398899589).

Almost surely, 2^{131330797799177} is an apocalyptic number.

It is an amenable number.

131330797799177 is a deficient number, since it is larger than the sum of its proper divisors (1).

131330797799177 is an equidigital number, since it uses as much as digits as its factorization.

131330797799177 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 330812181, while the sum is 74.

The spelling of 131330797799177 in words is "one hundred thirty-one trillion, three hundred thirty billion, seven hundred ninety-seven million, seven hundred ninety-nine thousand, one hundred seventy-seven".