11111108888849 has 2 divisors, whose sum is σ = 11111108888850. Its totient is φ = 11111108888848.

The previous prime is 11111108888833. The next prime is 11111108888851. The reversal of 11111108888849 is 94888880111111.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11083619248849 + 27489640000 = 3329207^2 + 165800^2 .

It is a cyclic number.

It is not a de Polignac number, because 11111108888849 - 2⁴ = 11111108888833 is a prime.

It is a Sophie Germain prime.

Together with 11111108888851, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (11111108828849) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5555554444424 + 5555554444425.

It is an arithmetic number, because the mean of its divisors is an integer number (5555554444425).

Almost surely, 2^{11111108888849} is an apocalyptic number.

It is an amenable number.

11111108888849 is a deficient number, since it is larger than the sum of its proper divisors (1).

11111108888849 is an equidigital number, since it uses as much as digits as its factorization.

11111108888849 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1179648, while the sum is 59.

The spelling of 11111108888849 in words is "eleven trillion, one hundred eleven billion, one hundred eight million, eight hundred eighty-eight thousand, eight hundred forty-nine".