11111111159 has 2 divisors, whose sum is σ = 11111111160. Its totient is φ = 11111111158.

The previous prime is 11111111153. The next prime is 11111111237. The reversal of 11111111159 is 95111111111.

It is a weak prime.

It is an emirp because it is prime and its reverse (95111111111) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 11111111159 - 2²⁰ = 11110062583 is a prime.

It is a plaindrome in base 10.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11111111153) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5555555579 + 5555555580.

It is an arithmetic number, because the mean of its divisors is an integer number (5555555580).

Almost surely, 2^11111111159 is an apocalyptic number.

11111111159 is a deficient number, since it is larger than the sum of its proper divisors (1).

11111111159 is an equidigital number, since it uses as much as digits as its factorization.

11111111159 is an evil number, because the sum of its binary digits is even.

The product of its digits is 45, while the sum is 23.

The spelling of 11111111159 in words is "eleven billion, one hundred eleven million, one hundred eleven thousand, one hundred fifty-nine".