11111100089 has 2 divisors, whose sum is σ = 11111100090. Its totient is φ = 11111100088.

The previous prime is 11111100083. The next prime is 11111100137. The reversal of 11111100089 is 98000111111.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10119354025 + 991746064 = 100595^2 + 31492^2 .

It is a cyclic number.

It is not a de Polignac number, because 11111100089 - 2⁸ = 11111099833 is a prime.

It is not a weakly prime, because it can be changed into another prime (11111100083) 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, 5555550044 + 5555550045.

It is an arithmetic number, because the mean of its divisors is an integer number (5555550045).

Almost surely, 2^11111100089 is an apocalyptic number.

It is an amenable number.

11111100089 is a deficient number, since it is larger than the sum of its proper divisors (1).

11111100089 is an equidigital number, since it uses as much as digits as its factorization.

11111100089 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72, while the sum is 23.

The spelling of 11111100089 in words is "eleven billion, one hundred eleven million, one hundred thousand, eighty-nine".