11518155193 has 2 divisors, whose sum is σ = 11518155194. Its totient is φ = 11518155192.

The previous prime is 11518155191. The next prime is 11518155203. The reversal of 11518155193 is 39155181511.

11518155193 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 can be written as a sum of positive squares in only one way, i.e., 8661466489 + 2856688704 = 93067^2 + 53448^2 .

It is a cyclic number.

It is not a de Polignac number, because 11518155193 - 2¹ = 11518155191 is a prime.

Together with 11518155191, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (11518155191) 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, 5759077596 + 5759077597.

It is an arithmetic number, because the mean of its divisors is an integer number (5759077597).

Almost surely, 2^11518155193 is an apocalyptic number.

It is an amenable number.

11518155193 is a deficient number, since it is larger than the sum of its proper divisors (1).

11518155193 is an equidigital number, since it uses as much as digits as its factorization.

11518155193 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 27000, while the sum is 40.

The spelling of 11518155193 in words is "eleven billion, five hundred eighteen million, one hundred fifty-five thousand, one hundred ninety-three".