91044090696 has 64 divisors (see below), whose sum is σ = 249743632320. Its totient is φ = 27485003520.

The previous prime is 91044090691. The next prime is 91044090703. The reversal of 91044090696 is 69609044019.

It is a super-2 number, since 2×91044090696² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (91044090691) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2736370 + ... + 2769441.

It is an arithmetic number, because the mean of its divisors is an integer number (3902244255).

Almost surely, 2^91044090696 is an apocalyptic number.

It is an amenable number.

91044090696 is an abundant number, since it is smaller than the sum of its proper divisors (158699541624).

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

91044090696 is a wasteful number, since it uses less digits than its factorization.

91044090696 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5505886 (or 5505882 counting only the distinct ones).

The product of its (nonzero) digits is 419904, while the sum is 48.

The spelling of 91044090696 in words is "ninety-one billion, forty-four million, ninety thousand, six hundred ninety-six".