91309027264 has 84 divisors (see below), whose sum is σ = 226987068504. Its totient is φ = 36122236416.

The previous prime is 91309027253. The next prime is 91309027273. The reversal of 91309027264 is 46272090319.

It is a self number, because there is not a number n which added to its sum of digits gives 91309027264.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1079094 + ... + 1160629.

It is an arithmetic number, because the mean of its divisors is an integer number (2702227006).

Almost surely, 2^91309027264 is an apocalyptic number.

It is an amenable number.

91309027264 is an abundant number, since it is smaller than the sum of its proper divisors (135678041240).

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

91309027264 is a wasteful number, since it uses less digits than its factorization.

91309027264 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2239762 (or 2239745 counting only the distinct ones).

The product of its (nonzero) digits is 163296, while the sum is 43.

The spelling of 91309027264 in words is "ninety-one billion, three hundred nine million, twenty-seven thousand, two hundred sixty-four".