91999011110011 has 4 divisors (see below), whose sum is σ = 97410717645912. Its totient is φ = 86587304574112.

The previous prime is 91999011109979. The next prime is 91999011110093. The reversal of 91999011110011 is 11001111099919.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 91999011110011 - 2⁵ = 91999011109979 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 91999011110011.

It is not an unprimeable number, because it can be changed into a prime (91999011110411) 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, 2705853267925 + ... + 2705853267958.

It is an arithmetic number, because the mean of its divisors is an integer number (24352679411478).

Almost surely, 2^{91999011110011} is an apocalyptic number.

91999011110011 is a deficient number, since it is larger than the sum of its proper divisors (5411706535901).

91999011110011 is a wasteful number, since it uses less digits than its factorization.

91999011110011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5411706535900.

The product of its (nonzero) digits is 6561, while the sum is 43.

The spelling of 91999011110011 in words is "ninety-one trillion, nine hundred ninety-nine billion, eleven million, one hundred ten thousand, eleven".