11518633331 has 2 divisors, whose sum is σ = 11518633332. Its totient is φ = 11518633330.

The previous prime is 11518633297. The next prime is 11518633349. The reversal of 11518633331 is 13333681511.

11518633331 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is an emirp because it is prime and its reverse (13333681511) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 11518633331 - 2⁶ = 11518633267 is a prime.

It is a super-2 number, since 2×11518633331² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 11518633291 and 11518633300.

It is not a weakly prime, because it can be changed into another prime (11518633391) 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, 5759316665 + 5759316666.

It is an arithmetic number, because the mean of its divisors is an integer number (5759316666).

Almost surely, 2^11518633331 is an apocalyptic number.

11518633331 is a deficient number, since it is larger than the sum of its proper divisors (1).

11518633331 is an equidigital number, since it uses as much as digits as its factorization.

11518633331 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 19440, while the sum is 35.

The spelling of 11518633331 in words is "eleven billion, five hundred eighteen million, six hundred thirty-three thousand, three hundred thirty-one".