131772763776949 has 2 divisors, whose sum is σ = 131772763776950. Its totient is φ = 131772763776948.

The previous prime is 131772763776943. The next prime is 131772763776991. The reversal of 131772763776949 is 949677367277131.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 89125268221924 + 42647495555025 = 9440618^2 + 6530505^2 .

It is a cyclic number.

It is not a de Polignac number, because 131772763776949 - 2⁷ = 131772763776821 is a prime.

It is a super-2 number, since 2×131772763776949² (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 (131772763776943) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65886381888474 + 65886381888475.

It is an arithmetic number, because the mean of its divisors is an integer number (65886381888475).

Almost surely, 2^{131772763776949} is an apocalyptic number.

It is an amenable number.

131772763776949 is a deficient number, since it is larger than the sum of its proper divisors (1).

131772763776949 is an equidigital number, since it uses as much as digits as its factorization.

131772763776949 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3528663264, while the sum is 79.

The spelling of 131772763776949 in words is "one hundred thirty-one trillion, seven hundred seventy-two billion, seven hundred sixty-three million, seven hundred seventy-six thousand, nine hundred forty-nine".