91910000100 has 72 divisors (see below), whose sum is σ = 266065658208. Its totient is φ = 24496486400.

The previous prime is 91910000087. The next prime is 91910000137. The reversal of 91910000100 is 100001919.

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, 499972 + ... + 658628.

It is an arithmetic number, because the mean of its divisors is an integer number (3695356364).

Almost surely, 2^91910000100 is an apocalyptic number.

It is an amenable number.

91910000100 is an abundant number, since it is smaller than the sum of its proper divisors (174155658108).

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

91910000100 is a wasteful number, since it uses less digits than its factorization.

91910000100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 160605 (or 160598 counting only the distinct ones).

The product of its (nonzero) digits is 81, while the sum is 21.

The spelling of 91910000100 in words is "ninety-one billion, nine hundred ten million, one hundred", and thus it is an aban number.