91717129213 has 8 divisors (see below), whose sum is σ = 96564427520. Its totient is φ = 86871839040.

The previous prime is 91717129193. The next prime is 91717129219. The reversal of 91717129213 is 31292171719.

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

It is a cyclic number.

It is not a de Polignac number, because 91717129213 - 2³³ = 83127194621 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 91717129213.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91717129219) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 407820 + ... + 591397.

It is an arithmetic number, because the mean of its divisors is an integer number (12070553440).

Almost surely, 2^91717129213 is an apocalyptic number.

It is an amenable number.

91717129213 is a deficient number, since it is larger than the sum of its proper divisors (4847298307).

91717129213 is a wasteful number, since it uses less digits than its factorization.

91717129213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1004067.

The product of its digits is 47628, while the sum is 43.

The spelling of 91717129213 in words is "ninety-one billion, seven hundred seventeen million, one hundred twenty-nine thousand, two hundred thirteen".