91004600500 has 48 divisors (see below), whose sum is σ = 216822610368. Its totient is φ = 33092580000.

The previous prime is 91004600483. The next prime is 91004600513. The reversal of 91004600500 is 500640019.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a congruent number.

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, 8267646 + ... + 8278645.

It is an arithmetic number, because the mean of its divisors is an integer number (4517137716).

Almost surely, 2^91004600500 is an apocalyptic number.

It is an amenable number.

91004600500 is an abundant number, since it is smaller than the sum of its proper divisors (125818009868).

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

91004600500 is a wasteful number, since it uses less digits than its factorization.

91004600500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16546321 (or 16546309 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 25.

The spelling of 91004600500 in words is "ninety-one billion, four million, six hundred thousand, five hundred".