11618315813 has 16 divisors (see below), whose sum is σ = 13020047040. Its totient is φ = 10297615104.

The previous prime is 11618315809. The next prime is 11618315851. The reversal of 11618315813 is 31851381611.

It is a cyclic number.

It is not a de Polignac number, because 11618315813 - 2² = 11618315809 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11618315893) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 143156 + ... + 209117.

It is an arithmetic number, because the mean of its divisors is an integer number (813752940).

Almost surely, 2^11618315813 is an apocalyptic number.

11618315813 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

11618315813 is a deficient number, since it is larger than the sum of its proper divisors (1401731227).

11618315813 is a wasteful number, since it uses less digits than its factorization.

11618315813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 352388.

The product of its digits is 17280, while the sum is 38.

The spelling of 11618315813 in words is "eleven billion, six hundred eighteen million, three hundred fifteen thousand, eight hundred thirteen".