747180131391 has 6 divisors (see below), whose sum is σ = 1079260189800. Its totient is φ = 498120087588.

The previous prime is 747180131351. The next prime is 747180131447. The reversal of 747180131391 is 193131081747.

747180131391 is a `hidden beast` number, since 7 + 471 + 80 + 1 + 3 + 13 + 91 = 666.

It is not a de Polignac number, because 747180131391 - 2³⁴ = 730000262207 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (747180131351) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 41510007291 + ... + 41510007308.

It is an arithmetic number, because the mean of its divisors is an integer number (179876698300).

Almost surely, 2^747180131391 is an apocalyptic number.

747180131391 is a deficient number, since it is larger than the sum of its proper divisors (332080058409).

747180131391 is a wasteful number, since it uses less digits than its factorization.

747180131391 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83020014605 (or 83020014602 counting only the distinct ones).

The product of its (nonzero) digits is 127008, while the sum is 45.

The spelling of 747180131391 in words is "seven hundred forty-seven billion, one hundred eighty million, one hundred thirty-one thousand, three hundred ninety-one".