91513996912 has 20 divisors (see below), whose sum is σ = 190947474760. Its totient is φ = 42237229248.

The previous prime is 91513996909. The next prime is 91513996939. The reversal of 91513996912 is 21969931519.

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 3 ways as a sum of consecutive naturals, for example, 219985362 + ... + 219985777.

It is an arithmetic number, because the mean of its divisors is an integer number (9547373738).

Almost surely, 2^91513996912 is an apocalyptic number.

It is an amenable number.

91513996912 is an abundant number, since it is smaller than the sum of its proper divisors (99433477848).

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

91513996912 is a wasteful number, since it uses less digits than its factorization.

91513996912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 439971160 (or 439971154 counting only the distinct ones).

The product of its digits is 1180980, while the sum is 55.

The spelling of 91513996912 in words is "ninety-one billion, five hundred thirteen million, nine hundred ninety-six thousand, nine hundred twelve".