11518195345 has 4 divisors (see below), whose sum is σ = 13821834420. Its totient is φ = 9214556272.

The previous prime is 11518195331. The next prime is 11518195357. The reversal of 11518195345 is 54359181511.

11518195345 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 54359181511 = 125471 ⋅433241.

It can be written as a sum of positive squares in 2 ways, for example, as 8360542096 + 3157653249 = 91436^2 + 56193^2 .

It is a cyclic number.

It is not a de Polignac number, because 11518195345 - 2²⁷ = 11383977617 is a prime.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 1151819530 + ... + 1151819539.

It is an arithmetic number, because the mean of its divisors is an integer number (3455458605).

Almost surely, 2^11518195345 is an apocalyptic number.

It is an amenable number.

11518195345 is a deficient number, since it is larger than the sum of its proper divisors (2303639075).

11518195345 is an equidigital number, since it uses as much as digits as its factorization.

11518195345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2303639074.

The product of its digits is 108000, while the sum is 43.

The spelling of 11518195345 in words is "eleven billion, five hundred eighteen million, one hundred ninety-five thousand, three hundred forty-five".