91717523714 has 8 divisors (see below), whose sum is σ = 137590916988. Its totient is φ = 45853884720.

The previous prime is 91717523713. The next prime is 91717523731. The reversal of 91717523714 is 41732571719.

It can be written as a sum of positive squares in 2 ways, for example, as 89740387489 + 1977136225 = 299567^2 + 44465^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (91717523713) 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, 2415017 + ... + 2452700.

Almost surely, 2^91717523714 is an apocalyptic number.

91717523714 is a deficient number, since it is larger than the sum of its proper divisors (45873393274).

91717523714 is a wasteful number, since it uses less digits than its factorization.

91717523714 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4877140.

The product of its digits is 370440, while the sum is 47.

The spelling of 91717523714 in words is "ninety-one billion, seven hundred seventeen million, five hundred twenty-three thousand, seven hundred fourteen".