91091101000 has 64 divisors (see below), whose sum is σ = 213216831360. Its totient is φ = 36425560000.

The previous prime is 91091100967. The next prime is 91091101043. The reversal of 91091101000 is 10119019.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3899355 + ... + 3922645.

It is an arithmetic number, because the mean of its divisors is an integer number (3331512990).

Almost surely, 2^91091101000 is an apocalyptic number.

It is an amenable number.

91091101000 is an abundant number, since it is smaller than the sum of its proper divisors (122125730360).

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

91091101000 is a wasteful number, since it uses less digits than its factorization.

91091101000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27223 (or 27209 counting only the distinct ones).

The product of its (nonzero) digits is 81, while the sum is 22.

The spelling of 91091101000 in words is "ninety-one billion, ninety-one million, one hundred one thousand".