131745823537 has 2 divisors, whose sum is σ = 131745823538. Its totient is φ = 131745823536.

The previous prime is 131745823477. The next prime is 131745823541. The reversal of 131745823537 is 735328547131.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 131298247201 + 447576336 = 362351^2 + 21156^2 .

It is a cyclic number.

It is not a de Polignac number, because 131745823537 - 2¹¹ = 131745821489 is a prime.

It is not a weakly prime, because it can be changed into another prime (131745823637) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65872911768 + 65872911769.

It is an arithmetic number, because the mean of its divisors is an integer number (65872911769).

Almost surely, 2^131745823537 is an apocalyptic number.

It is an amenable number.

131745823537 is a deficient number, since it is larger than the sum of its proper divisors (1).

131745823537 is an equidigital number, since it uses as much as digits as its factorization.

131745823537 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2116800, while the sum is 49.

The spelling of 131745823537 in words is "one hundred thirty-one billion, seven hundred forty-five million, eight hundred twenty-three thousand, five hundred thirty-seven".