11001111099691 has 2 divisors, whose sum is σ = 11001111099692. Its totient is φ = 11001111099690.

The previous prime is 11001111099683. The next prime is 11001111099701. The reversal of 11001111099691 is 19699011110011.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 11001111099691 - 2³ = 11001111099683 is a prime.

It is not a weakly prime, because it can be changed into another prime (11001111090691) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5500555549845 + 5500555549846.

It is an arithmetic number, because the mean of its divisors is an integer number (5500555549846).

Almost surely, 2^{11001111099691} is an apocalyptic number.

11001111099691 is a deficient number, since it is larger than the sum of its proper divisors (1).

11001111099691 is an equidigital number, since it uses as much as digits as its factorization.

11001111099691 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4374, while the sum is 40.

The spelling of 11001111099691 in words is "eleven trillion, one billion, one hundred eleven million, ninety-nine thousand, six hundred ninety-one".