131783254637729 has 2 divisors, whose sum is σ = 131783254637730. Its totient is φ = 131783254637728.

The previous prime is 131783254637707. The next prime is 131783254637777. The reversal of 131783254637729 is 927736452387131.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 77871712005025 + 53911542632704 = 8824495^2 + 7342448^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-131783254637729 is a prime.

It is not a weakly prime, because it can be changed into another prime (131783254627729) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65891627318864 + 65891627318865.

It is an arithmetic number, because the mean of its divisors is an integer number (65891627318865).

Almost surely, 2^{131783254637729} is an apocalyptic number.

It is an amenable number.

131783254637729 is a deficient number, since it is larger than the sum of its proper divisors (1).

131783254637729 is an equidigital number, since it uses as much as digits as its factorization.

131783254637729 is an evil number, because the sum of its binary digits is even.

The product of its digits is 320060160, while the sum is 68.

The spelling of 131783254637729 in words is "one hundred thirty-one trillion, seven hundred eighty-three billion, two hundred fifty-four million, six hundred thirty-seven thousand, seven hundred twenty-nine".