11191894559 has 2 divisors, whose sum is σ = 11191894560. Its totient is φ = 11191894558.

The previous prime is 11191894547. The next prime is 11191894573. The reversal of 11191894559 is 95549819111.

11191894559 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 11191894559 - 2⁸ = 11191894303 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 11191894559.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11191894579) 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, 5595947279 + 5595947280.

It is an arithmetic number, because the mean of its divisors is an integer number (5595947280).

Almost surely, 2^11191894559 is an apocalyptic number.

11191894559 is a deficient number, since it is larger than the sum of its proper divisors (1).

11191894559 is an equidigital number, since it uses as much as digits as its factorization.

11191894559 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 583200, while the sum is 53.

The spelling of 11191894559 in words is "eleven billion, one hundred ninety-one million, eight hundred ninety-four thousand, five hundred fifty-nine".