91955682911 has 4 divisors (see below), whose sum is σ = 91970986824. Its totient is φ = 91940379000.

The previous prime is 91955682901. The next prime is 91955682919. The reversal of 91955682911 is 11928655919.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 11928655919 = 829 ⋅14389211.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-91955682911 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91955682919) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7642940 + ... + 7654961.

It is an arithmetic number, because the mean of its divisors is an integer number (22992746706).

Almost surely, 2^91955682911 is an apocalyptic number.

91955682911 is a deficient number, since it is larger than the sum of its proper divisors (15303913).

91955682911 is a wasteful number, since it uses less digits than its factorization.

91955682911 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15303912.

The product of its digits is 1749600, while the sum is 56.

The spelling of 91955682911 in words is "ninety-one billion, nine hundred fifty-five million, six hundred eighty-two thousand, nine hundred eleven".