91913828100 has 72 divisors (see below), whose sum is σ = 279934062240. Its totient is φ = 23220334080.

The previous prime is 91913828099. The next prime is 91913828113. The reversal of 91913828100 is 182831919.

It is a super-2 number, since 2×91913828100² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8056917 + ... + 8068316.

Almost surely, 2^91913828100 is an apocalyptic number.

It is an amenable number.

91913828100 is an abundant number, since it is smaller than the sum of its proper divisors (188020234140).

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

91913828100 is a wasteful number, since it uses less digits than its factorization.

91913828100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16125269 (or 16125262 counting only the distinct ones).

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

The spelling of 91913828100 in words is "ninety-one billion, nine hundred thirteen million, eight hundred twenty-eight thousand, one hundred".