91114512785 has 8 divisors (see below), whose sum is σ = 111663743616. Its totient is φ = 71340724720.

The previous prime is 91114512739. The next prime is 91114512799. The reversal of 91114512785 is 58721541119.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 91114512785 - 2⁸ = 91114512529 is a prime.

It is a Duffinian 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, 193860431 + ... + 193860900.

It is an arithmetic number, because the mean of its divisors is an integer number (13957967952).

Almost surely, 2^91114512785 is an apocalyptic number.

It is an amenable number.

91114512785 is a deficient number, since it is larger than the sum of its proper divisors (20549230831).

91114512785 is a wasteful number, since it uses less digits than its factorization.

91114512785 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 387721383.

The product of its digits is 100800, while the sum is 44.

The spelling of 91114512785 in words is "ninety-one billion, one hundred fourteen million, five hundred twelve thousand, seven hundred eighty-five".