11111108828849 has 2 divisors, whose sum is σ = 11111108828850. Its totient is φ = 11111108828848.

The previous prime is 11111108828821. The next prime is 11111108828873. The reversal of 11111108828849 is 94882880111111.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8890725719824 + 2220383109025 = 2981732^2 + 1490095^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11111108828849 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 11111108828849.

It is not a weakly prime, because it can be changed into another prime (11111108828749) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5555554414424 + 5555554414425.

It is an arithmetic number, because the mean of its divisors is an integer number (5555554414425).

Almost surely, 2^{11111108828849} is an apocalyptic number.

It is an amenable number.

11111108828849 is a deficient number, since it is larger than the sum of its proper divisors (1).

11111108828849 is an equidigital number, since it uses as much as digits as its factorization.

11111108828849 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 294912, while the sum is 53.

The spelling of 11111108828849 in words is "eleven trillion, one hundred eleven billion, one hundred eight million, eight hundred twenty-eight thousand, eight hundred forty-nine".