11115391559 has 2 divisors, whose sum is σ = 11115391560. Its totient is φ = 11115391558.

The previous prime is 11115391549. The next prime is 11115391601. The reversal of 11115391559 is 95519351111.

11115391559 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 11115391559 - 2²⁸ = 10846956103 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11115391549) 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, 5557695779 + 5557695780.

It is an arithmetic number, because the mean of its divisors is an integer number (5557695780).

Almost surely, 2^11115391559 is an apocalyptic number.

11115391559 is a deficient number, since it is larger than the sum of its proper divisors (1).

11115391559 is an equidigital number, since it uses as much as digits as its factorization.

11115391559 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 30375, while the sum is 41.

The spelling of 11115391559 in words is "eleven billion, one hundred fifteen million, three hundred ninety-one thousand, five hundred fifty-nine".