131784898976669 has 2 divisors, whose sum is σ = 131784898976670. Its totient is φ = 131784898976668.

The previous prime is 131784898976617. The next prime is 131784898976693. The reversal of 131784898976669 is 966679898487131.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 79063431464644 + 52721467512025 = 8891762^2 + 7260955^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-131784898976669 is a prime.

It is a super-2 number, since 2×131784898976669² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (131784898976369) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65892449488334 + 65892449488335.

It is an arithmetic number, because the mean of its divisors is an integer number (65892449488335).

Almost surely, 2^{131784898976669} is an apocalyptic number.

It is an amenable number.

131784898976669 is a deficient number, since it is larger than the sum of its proper divisors (1).

131784898976669 is an equidigital number, since it uses as much as digits as its factorization.

131784898976669 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 47405481984, while the sum is 92.

The spelling of 131784898976669 in words is "one hundred thirty-one trillion, seven hundred eighty-four billion, eight hundred ninety-eight million, nine hundred seventy-six thousand, six hundred sixty-nine".