131664365433637 has 2 divisors, whose sum is σ = 131664365433638. Its totient is φ = 131664365433636.

The previous prime is 131664365433599. The next prime is 131664365433659. The reversal of 131664365433637 is 736334563466131.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 93434765139556 + 38229600294081 = 9666166^2 + 6183009^2 .

It is a cyclic number.

It is not a de Polignac number, because 131664365433637 - 2¹¹ = 131664365431589 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (131664365433697) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65832182716818 + 65832182716819.

It is an arithmetic number, because the mean of its divisors is an integer number (65832182716819).

Almost surely, 2^{131664365433637} is an apocalyptic number.

It is an amenable number.

131664365433637 is a deficient number, since it is larger than the sum of its proper divisors (1).

131664365433637 is an equidigital number, since it uses as much as digits as its factorization.

131664365433637 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 176359680, while the sum is 61.

The spelling of 131664365433637 in words is "one hundred thirty-one trillion, six hundred sixty-four billion, three hundred sixty-five million, four hundred thirty-three thousand, six hundred thirty-seven".