91001010112 has 56 divisors (see below), whose sum is σ = 194720657040. Its totient is φ = 42054359040.

The previous prime is 91001010103. The next prime is 91001010119. The reversal of 91001010112 is 21101010019.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91001010119) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 862783 + ... + 962494.

It is an arithmetic number, because the mean of its divisors is an integer number (3477154590).

Almost surely, 2^91001010112 is an apocalyptic number.

It is an amenable number.

91001010112 is an abundant number, since it is smaller than the sum of its proper divisors (103719646928).

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

91001010112 is a wasteful number, since it uses less digits than its factorization.

91001010112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1825349 (or 1825339 counting only the distinct ones).

The product of its (nonzero) digits is 18, while the sum is 16.

The spelling of 91001010112 in words is "ninety-one billion, one million, ten thousand, one hundred twelve".