131700661657757 has 2 divisors, whose sum is σ = 131700661657758. Its totient is φ = 131700661657756.

The previous prime is 131700661657699. The next prime is 131700661657781. The reversal of 131700661657757 is 757756166007131.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 131237049103876 + 463612553881 = 11455874^2 + 680891^2 .

It is a cyclic number.

It is not a de Polignac number, because 131700661657757 - 2¹⁸ = 131700661395613 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 131700661657757.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (131700661656757) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65850330828878 + 65850330828879.

It is an arithmetic number, because the mean of its divisors is an integer number (65850330828879).

Almost surely, 2^{131700661657757} is an apocalyptic number.

It is an amenable number.

131700661657757 is a deficient number, since it is larger than the sum of its proper divisors (1).

131700661657757 is an equidigital number, since it uses as much as digits as its factorization.

131700661657757 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 38896200, while the sum is 62.

The spelling of 131700661657757 in words is "one hundred thirty-one trillion, seven hundred billion, six hundred sixty-one million, six hundred fifty-seven thousand, seven hundred fifty-seven".