91497936224 has 24 divisors (see below), whose sum is σ = 180512660160. Its totient is φ = 45653451136.

The previous prime is 91497936191. The next prime is 91497936239. The reversal of 91497936224 is 42263979419.

It is a self number, because there is not a number n which added to its sum of digits gives 91497936224.

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 2969339 + ... + 2999994.

It is an arithmetic number, because the mean of its divisors is an integer number (7521360840).

Almost surely, 2^91497936224 is an apocalyptic number.

It is an amenable number.

91497936224 is a deficient number, since it is larger than the sum of its proper divisors (89014723936).

91497936224 is a wasteful number, since it uses less digits than its factorization.

91497936224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5969822 (or 5969814 counting only the distinct ones).

The product of its digits is 5878656, while the sum is 56.

The spelling of 91497936224 in words is "ninety-one billion, four hundred ninety-seven million, nine hundred thirty-six thousand, two hundred twenty-four".