131366434775 has 6 divisors (see below), whose sum is σ = 162894379152. Its totient is φ = 105093147800.

The previous prime is 131366434751. The next prime is 131366434807. The reversal of 131366434775 is 577434663131.

It is not a de Polignac number, because 131366434775 - 2⁸ = 131366434519 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2627328671 + ... + 2627328720.

It is an arithmetic number, because the mean of its divisors is an integer number (27149063192).

Almost surely, 2^131366434775 is an apocalyptic number.

131366434775 is a deficient number, since it is larger than the sum of its proper divisors (31527944377).

131366434775 is an equidigital number, since it uses as much as digits as its factorization.

131366434775 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5254657401 (or 5254657396 counting only the distinct ones).

The product of its digits is 3810240, while the sum is 50.

The spelling of 131366434775 in words is "one hundred thirty-one billion, three hundred sixty-six million, four hundred thirty-four thousand, seven hundred seventy-five".