11518155159 has 12 divisors (see below), whose sum is σ = 17864893944. Its totient is φ = 6581802864.

The previous prime is 11518155113. The next prime is 11518155161. The reversal of 11518155159 is 95155181511.

11518155159 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 11518155159 - 2⁷ = 11518155031 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 11518155159.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11518155109) 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 in 11 ways as a sum of consecutive naturals, for example, 39177252 + ... + 39177545.

It is an arithmetic number, because the mean of its divisors is an integer number (1488741162).

Almost surely, 2^11518155159 is an apocalyptic number.

11518155159 is a deficient number, since it is larger than the sum of its proper divisors (6346738785).

11518155159 is an equidigital number, since it uses as much as digits as its factorization.

11518155159 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78354814 (or 78354807 counting only the distinct ones).

The product of its digits is 45000, while the sum is 42.

The spelling of 11518155159 in words is "eleven billion, five hundred eighteen million, one hundred fifty-five thousand, one hundred fifty-nine".