91716713425 has 12 divisors (see below), whose sum is σ = 114151516380. Its totient is φ = 73100601920.

The previous prime is 91716713401. The next prime is 91716713443. The reversal of 91716713425 is 52431761719.

It can be written as a sum of positive squares in 6 ways, for example, as 2313321409 + 89403392016 = 48097^2 + 299004^2 .

It is not a de Polignac number, because 91716713425 - 2¹³ = 91716705233 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6812362 + ... + 6825811.

It is an arithmetic number, because the mean of its divisors is an integer number (9512626365).

Almost surely, 2^91716713425 is an apocalyptic number.

It is an amenable number.

91716713425 is a deficient number, since it is larger than the sum of its proper divisors (22434802955).

91716713425 is a wasteful number, since it uses less digits than its factorization.

91716713425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13638452 (or 13638447 counting only the distinct ones).

The product of its digits is 317520, while the sum is 46.

The spelling of 91716713425 in words is "ninety-one billion, seven hundred sixteen million, seven hundred thirteen thousand, four hundred twenty-five".