91100000011 has 4 divisors (see below), whose sum is σ = 91101076192. Its totient is φ = 91098923832.

The previous prime is 91100000009. The next prime is 91100000039. The reversal of 91100000011 is 11000000119.

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 91100000011 - 2¹ = 91100000009 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 91099999937 and 91100000000.

It is not an unprimeable number, because it can be changed into a prime (91100000071) 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, 399156 + ... + 584401.

It is an arithmetic number, because the mean of its divisors is an integer number (22775269048).

Almost surely, 2^91100000011 is an apocalyptic number.

91100000011 is a deficient number, since it is larger than the sum of its proper divisors (1076181).

91100000011 is an equidigital number, since it uses as much as digits as its factorization.

91100000011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1076180.

The product of its (nonzero) digits is 9, while the sum is 13.

It can be divided in two parts, 9 and 1100000011, that multiplied together give a palindrome (9900000099).

The spelling of 91100000011 in words is "ninety-one billion, one hundred million, eleven", and thus it is an aban number.