11011111001089 has 2 divisors, whose sum is σ = 11011111001090. Its totient is φ = 11011111001088.

The previous prime is 11011111001083. The next prime is 11011111001129. The reversal of 11011111001089 is 98010011111011.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8184062208400 + 2827048792689 = 2860780^2 + 1681383^2 .

It is a cyclic number.

It is not a de Polignac number, because 11011111001089 - 2⁷ = 11011111000961 is a prime.

It is not a weakly prime, because it can be changed into another prime (11011111001083) 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, 5505555500544 + 5505555500545.

It is an arithmetic number, because the mean of its divisors is an integer number (5505555500545).

Almost surely, 2^{11011111001089} is an apocalyptic number.

It is an amenable number.

11011111001089 is a deficient number, since it is larger than the sum of its proper divisors (1).

11011111001089 is an equidigital number, since it uses as much as digits as its factorization.

11011111001089 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 25.

The spelling of 11011111001089 in words is "eleven trillion, eleven billion, one hundred eleven million, one thousand, eighty-nine".