91313570044 has 24 divisors (see below), whose sum is σ = 163393333488. Its totient is φ = 44635893120.

The previous prime is 91313570027. The next prime is 91313570059. The reversal of 91313570044 is 44007531319.

It is a junction number, because it is equal to n+sod(n) for n = 91313569985 and 91313570012.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 706842 + ... + 825985.

It is an arithmetic number, because the mean of its divisors is an integer number (6808055562).

Almost surely, 2^91313570044 is an apocalyptic number.

It is an amenable number.

91313570044 is a deficient number, since it is larger than the sum of its proper divisors (72079763444).

91313570044 is a wasteful number, since it uses less digits than its factorization.

91313570044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1533165 (or 1533163 counting only the distinct ones).

The product of its (nonzero) digits is 45360, while the sum is 37.

The spelling of 91313570044 in words is "ninety-one billion, three hundred thirteen million, five hundred seventy thousand, forty-four".