91133400232 has 16 divisors (see below), whose sum is σ = 195285857760. Its totient is φ = 39057171504.

The previous prime is 91133400229. The next prime is 91133400251. The reversal of 91133400232 is 23200433119.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a self number, because there is not a number n which added to its sum of digits gives 91133400232.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 813691018 + ... + 813691129.

It is an arithmetic number, because the mean of its divisors is an integer number (12205366110).

Almost surely, 2^91133400232 is an apocalyptic number.

It is an amenable number.

91133400232 is an abundant number, since it is smaller than the sum of its proper divisors (104152457528).

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

91133400232 is a wasteful number, since it uses less digits than its factorization.

91133400232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1627382160 (or 1627382156 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 28.

The spelling of 91133400232 in words is "ninety-one billion, one hundred thirty-three million, four hundred thousand, two hundred thirty-two".