91608520192 has 80 divisors (see below), whose sum is σ = 209413730592. Its totient is φ = 39218135040.

The previous prime is 91608520189. The next prime is 91608520207. The reversal of 91608520192 is 29102580619.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3402142 + ... + 3428962.

Almost surely, 2^91608520192 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 91608520192, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (104706865296).

91608520192 is an abundant number, since it is smaller than the sum of its proper divisors (117805210400).

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

91608520192 is an equidigital number, since it uses as much as digits as its factorization.

91608520192 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27799 (or 27783 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 43.

The spelling of 91608520192 in words is "ninety-one billion, six hundred eight million, five hundred twenty thousand, one hundred ninety-two".