91716858722 has 32 divisors (see below), whose sum is σ = 142096211712. Its totient is φ = 44374546944.

The previous prime is 91716858697. The next prime is 91716858731. The reversal of 91716858722 is 22785861719.

It is a Smith number, since the sum of its digits (56) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9961373 + ... + 9970575.

It is an arithmetic number, because the mean of its divisors is an integer number (4440506616).

Almost surely, 2^91716858722 is an apocalyptic number.

91716858722 is a deficient number, since it is larger than the sum of its proper divisors (50379352990).

91716858722 is a wasteful number, since it uses less digits than its factorization.

91716858722 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10442.

The product of its digits is 3386880, while the sum is 56.

The spelling of 91716858722 in words is "ninety-one billion, seven hundred sixteen million, eight hundred fifty-eight thousand, seven hundred twenty-two".