91714681013 has 4 divisors (see below), whose sum is σ = 91715729868. Its totient is φ = 91713632160.

The previous prime is 91714680931. The next prime is 91714681033. The reversal of 91714681013 is 31018641719.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 31018641719 = 13 ⋅2386049363.

It can be written as a sum of positive squares in 2 ways, for example, as 30610301764 + 61104379249 = 174958^2 + 247193^2 .

It is a cyclic number.

It is not a de Polignac number, because 91714681013 - 2¹⁰ = 91714679989 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91714681033) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 380006 + ... + 572567.

It is an arithmetic number, because the mean of its divisors is an integer number (22928932467).

Almost surely, 2^91714681013 is an apocalyptic number.

It is an amenable number.

91714681013 is a deficient number, since it is larger than the sum of its proper divisors (1048855).

91714681013 is an equidigital number, since it uses as much as digits as its factorization.

91714681013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1048854.

The product of its (nonzero) digits is 36288, while the sum is 41.

The spelling of 91714681013 in words is "ninety-one billion, seven hundred fourteen million, six hundred eighty-one thousand, thirteen".