11518310399 has 4 divisors (see below), whose sum is σ = 11526206520. Its totient is φ = 11510414280.

The previous prime is 11518310387. The next prime is 11518310423. The reversal of 11518310399 is 99301381511.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 11518310399 - 2¹⁶ = 11518244863 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11518340399) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3945872 + ... + 3948789.

It is an arithmetic number, because the mean of its divisors is an integer number (2881551630).

Almost surely, 2^11518310399 is an apocalyptic number.

11518310399 is a deficient number, since it is larger than the sum of its proper divisors (7896121).

11518310399 is an equidigital number, since it uses as much as digits as its factorization.

11518310399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7896120.

The product of its (nonzero) digits is 29160, while the sum is 41.

The spelling of 11518310399 in words is "eleven billion, five hundred eighteen million, three hundred ten thousand, three hundred ninety-nine".