11518155113 has 2 divisors, whose sum is σ = 11518155114. Its totient is φ = 11518155112.

The previous prime is 11518155109. The next prime is 11518155161. The reversal of 11518155113 is 31155181511.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8087944489 + 3430210624 = 89933^2 + 58568^2 .

It is a cyclic number.

It is not a de Polignac number, because 11518155113 - 2² = 11518155109 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 11518155113.

It is not a weakly prime, because it can be changed into another prime (11518155193) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5759077556 + 5759077557.

It is an arithmetic number, because the mean of its divisors is an integer number (5759077557).

Almost surely, 2^11518155113 is an apocalyptic number.

It is an amenable number.

11518155113 is a deficient number, since it is larger than the sum of its proper divisors (1).

11518155113 is an equidigital number, since it uses as much as digits as its factorization.

11518155113 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3000, while the sum is 32.

The spelling of 11518155113 in words is "eleven billion, five hundred eighteen million, one hundred fifty-five thousand, one hundred thirteen".