11518310387 has 2 divisors, whose sum is σ = 11518310388. Its totient is φ = 11518310386.

The previous prime is 11518310381. The next prime is 11518310423. The reversal of 11518310387 is 78301381511.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 11518310387 - 2⁴ = 11518310371 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 11518310387.

It is not a weakly prime, because it can be changed into another prime (11518310381) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5759155193 + 5759155194.

It is an arithmetic number, because the mean of its divisors is an integer number (5759155194).

Almost surely, 2^11518310387 is an apocalyptic number.

11518310387 is a deficient number, since it is larger than the sum of its proper divisors (1).

11518310387 is an equidigital number, since it uses as much as digits as its factorization.

11518310387 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20160, while the sum is 38.

Adding to 11518310387 its reverse (78301381511), we get a palindrome (89819691898).

The spelling of 11518310387 in words is "eleven billion, five hundred eighteen million, three hundred ten thousand, three hundred eighty-seven".