11111000992909 has 2 divisors, whose sum is σ = 11111000992910. Its totient is φ = 11111000992908.

The previous prime is 11111000992873. The next prime is 11111000992937. The reversal of 11111000992909 is 90929900011111.

11111000992909 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10910614946884 + 200386046025 = 3303122^2 + 447645^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11111000992909 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11111000992409) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5555500496454 + 5555500496455.

It is an arithmetic number, because the mean of its divisors is an integer number (5555500496455).

Almost surely, 2^{11111000992909} is an apocalyptic number.

It is an amenable number.

11111000992909 is a deficient number, since it is larger than the sum of its proper divisors (1).

11111000992909 is an equidigital number, since it uses as much as digits as its factorization.

11111000992909 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13122, while the sum is 43.

The spelling of 11111000992909 in words is "eleven trillion, one hundred eleven billion, nine hundred ninety-two thousand, nine hundred nine".