131727571768669 has 2 divisors, whose sum is σ = 131727571768670. Its totient is φ = 131727571768668.

The previous prime is 131727571768657. The next prime is 131727571768759. The reversal of 131727571768669 is 966867175727131.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 116583566027769 + 15144005740900 = 10797387^2 + 3891530^2 .

It is a cyclic number.

It is not a de Polignac number, because 131727571768669 - 2⁹ = 131727571768157 is a prime.

It is a super-2 number, since 2×131727571768669² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 131727571768595 and 131727571768604.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (131727571762669) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65863785884334 + 65863785884335.

It is an arithmetic number, because the mean of its divisors is an integer number (65863785884335).

Almost surely, 2^{131727571768669} is an apocalyptic number.

It is an amenable number.

131727571768669 is a deficient number, since it is larger than the sum of its proper divisors (1).

131727571768669 is an equidigital number, since it uses as much as digits as its factorization.

131727571768669 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1120210560, while the sum is 76.

The spelling of 131727571768669 in words is "one hundred thirty-one trillion, seven hundred twenty-seven billion, five hundred seventy-one million, seven hundred sixty-eight thousand, six hundred sixty-nine".