91128011496 has 64 divisors (see below), whose sum is σ = 235717905600. Its totient is φ = 29323327488.

The previous prime is 91128011477. The next prime is 91128011519. The reversal of 91128011496 is 69411082119.

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, 6519411 + ... + 6533373.

It is an arithmetic number, because the mean of its divisors is an integer number (3683092275).

Almost surely, 2^91128011496 is an apocalyptic number.

It is an amenable number.

91128011496 is an abundant number, since it is smaller than the sum of its proper divisors (144589894104).

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

91128011496 is a wasteful number, since it uses less digits than its factorization.

91128011496 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23378 (or 23374 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 42.

The spelling of 91128011496 in words is "ninety-one billion, one hundred twenty-eight million, eleven thousand, four hundred ninety-six".