91101265108 has 48 divisors (see below), whose sum is σ = 186076396800. Its totient is φ = 39010756512.

The previous prime is 91101265091. The next prime is 91101265111. The reversal of 91101265108 is 80156210119.

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, 1650810 + ... + 1705102.

It is an arithmetic number, because the mean of its divisors is an integer number (3876591600).

Almost surely, 2^91101265108 is an apocalyptic number.

91101265108 is a gapful number since it is divisible by the number (98) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 91101265108, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (93038198400).

91101265108 is an abundant number, since it is smaller than the sum of its proper divisors (94975131692).

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

91101265108 is a wasteful number, since it uses less digits than its factorization.

91101265108 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55541 (or 55525 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 34.

The spelling of 91101265108 in words is "ninety-one billion, one hundred one million, two hundred sixty-five thousand, one hundred eight".