131444275769 has 2 divisors, whose sum is σ = 131444275770. Its totient is φ = 131444275768.

The previous prime is 131444275733. The next prime is 131444275813. The reversal of 131444275769 is 967572444131.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 75618400144 + 55825875625 = 274988^2 + 236275^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-131444275769 is a prime.

It is a super-2 number, since 2×131444275769² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 131444275769.

It is not a weakly prime, because it can be changed into another prime (131444775769) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65722137884 + 65722137885.

It is an arithmetic number, because the mean of its divisors is an integer number (65722137885).

Almost surely, 2^131444275769 is an apocalyptic number.

It is an amenable number.

131444275769 is a deficient number, since it is larger than the sum of its proper divisors (1).

131444275769 is an equidigital number, since it uses as much as digits as its factorization.

131444275769 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5080320, while the sum is 53.

The spelling of 131444275769 in words is "one hundred thirty-one billion, four hundred forty-four million, two hundred seventy-five thousand, seven hundred sixty-nine".