11544518317 has 4 divisors (see below), whose sum is σ = 12046453920. Its totient is φ = 11042582716.

The previous prime is 11544518311. The next prime is 11544518383. The reversal of 11544518317 is 71381544511.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a de Polignac number, because none of the positive numbers 2^k-11544518317 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 11544518317.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11544518311) 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, 250967767 + ... + 250967812.

It is an arithmetic number, because the mean of its divisors is an integer number (3011613480).

Almost surely, 2^11544518317 is an apocalyptic number.

It is an amenable number.

11544518317 is a deficient number, since it is larger than the sum of its proper divisors (501935603).

11544518317 is an equidigital number, since it uses as much as digits as its factorization.

11544518317 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 501935602.

The product of its digits is 67200, while the sum is 40.

The spelling of 11544518317 in words is "eleven billion, five hundred forty-four million, five hundred eighteen thousand, three hundred seventeen".