91716805000 has 40 divisors (see below), whose sum is σ = 214892485830. Its totient is φ = 36686720000.

The previous prime is 91716804989. The next prime is 91716805031. The reversal of 91716805000 is 50861719.

It can be written as a sum of positive squares in 5 ways, for example, as 2773286244 + 88943518756 = 52662^2 + 298234^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 9166681 + ... + 9176680.

Almost surely, 2^91716805000 is an apocalyptic number.

It is an amenable number.

91716805000 is an abundant number, since it is smaller than the sum of its proper divisors (123175680830).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

91716805000 is a wasteful number, since it uses less digits than its factorization.

91716805000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18343387 (or 18343368 counting only the distinct ones).

The product of its (nonzero) digits is 15120, while the sum is 37.

The spelling of 91716805000 in words is "ninety-one billion, seven hundred sixteen million, eight hundred five thousand".