91127513172 has 24 divisors (see below), whose sum is σ = 212967856192. Its totient is φ = 30327696000.

The previous prime is 91127513161. The next prime is 91127513219. The reversal of 91127513172 is 27131572119.

It is a self number, because there is not a number n which added to its sum of digits gives 91127513172.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6009829 + ... + 6024972.

Almost surely, 2^91127513172 is an apocalyptic number.

It is an amenable number.

91127513172 is an abundant number, since it is smaller than the sum of its proper divisors (121840343020).

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

91127513172 is a wasteful number, since it uses less digits than its factorization.

91127513172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12035439 (or 12035437 counting only the distinct ones).

The product of its digits is 26460, while the sum is 39.

The spelling of 91127513172 in words is "ninety-one billion, one hundred twenty-seven million, five hundred thirteen thousand, one hundred seventy-two".