91168658928744 has 128 divisors (see below), whose sum is σ = 229703995593600. Its totient is φ = 30152942945280.

The previous prime is 91168658928707. The next prime is 91168658928839. The reversal of 91168658928744 is 44782985686119.

It is a self number, because there is not a number n which added to its sum of digits gives 91168658928744.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2831044947 + ... + 2831077149.

It is an arithmetic number, because the mean of its divisors is an integer number (1794562465575).

Almost surely, 2^{91168658928744} is an apocalyptic number.

It is an amenable number.

91168658928744 is an abundant number, since it is smaller than the sum of its proper divisors (138535336664856).

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

91168658928744 is a wasteful number, since it uses less digits than its factorization.

91168658928744 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34195 (or 34191 counting only the distinct ones).

The product of its digits is 1672151040, while the sum is 78.

The spelling of 91168658928744 in words is "ninety-one trillion, one hundred sixty-eight billion, six hundred fifty-eight million, nine hundred twenty-eight thousand, seven hundred forty-four".