13317388656 has 160 divisors (see below), whose sum is σ = 40738725888. Its totient is φ = 3695569920.

The previous prime is 13317388621. The next prime is 13317388657. The reversal of 13317388656 is 65688371331.

13317388656 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×13317388656² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 13317388599 and 13317388608.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13317388657) 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 in 31 ways as a sum of consecutive naturals, for example, 864090 + ... + 879366.

Almost surely, 2^13317388656 is an apocalyptic number.

13317388656 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13317388656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20369362944).

13317388656 is an abundant number, since it is smaller than the sum of its proper divisors (27421337232).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13317388656 is a wasteful number, since it uses less digits than its factorization.

13317388656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15439 (or 15433 counting only the distinct ones).

The product of its digits is 2177280, while the sum is 51.

The spelling of 13317388656 in words is "thirteen billion, three hundred seventeen million, three hundred eighty-eight thousand, six hundred fifty-six".