91363745472 has 28 divisors (see below), whose sum is σ = 241733243736. Its totient is φ = 30454581760.

The previous prime is 91363745471. The next prime is 91363745489. The reversal of 91363745472 is 27454736319.

It is not an unprimeable number, because it can be changed into a prime (91363745471) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 237926229 + ... + 237926612.

Almost surely, 2^91363745472 is an apocalyptic number.

It is an amenable number.

91363745472 is an abundant number, since it is smaller than the sum of its proper divisors (150369498264).

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

91363745472 is a wasteful number, since it uses less digits than its factorization.

91363745472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 475852856 (or 475852846 counting only the distinct ones).

The product of its digits is 3810240, while the sum is 51.

The spelling of 91363745472 in words is "ninety-one billion, three hundred sixty-three million, seven hundred forty-five thousand, four hundred seventy-two".