131785172027 has 2 divisors, whose sum is σ = 131785172028. Its totient is φ = 131785172026.

The previous prime is 131785172021. The next prime is 131785172041. The reversal of 131785172027 is 720271587131.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 131785172027 - 2³⁶ = 63065695291 is a prime.

It is not a weakly prime, because it can be changed into another prime (131785172021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65892586013 + 65892586014.

It is an arithmetic number, because the mean of its divisors is an integer number (65892586014).

Almost surely, 2^131785172027 is an apocalyptic number.

131785172027 is a deficient number, since it is larger than the sum of its proper divisors (1).

131785172027 is an equidigital number, since it uses as much as digits as its factorization.

131785172027 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 164640, while the sum is 44.

The spelling of 131785172027 in words is "one hundred thirty-one billion, seven hundred eighty-five million, one hundred seventy-two thousand, twenty-seven".