13318593856 has 56 divisors (see below), whose sum is σ = 27997688480. Its totient is φ = 6268534272.

The previous prime is 13318593817. The next prime is 13318593857. The reversal of 13318593856 is 65839581331.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13318593857) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 156031 + ... + 225793.

Almost surely, 2^13318593856 is an apocalyptic number.

13318593856 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 13318593856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13998844240).

13318593856 is an abundant number, since it is smaller than the sum of its proper divisors (14679094624).

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

13318593856 is a wasteful number, since it uses less digits than its factorization.

13318593856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69951 (or 69941 counting only the distinct ones).

The product of its digits is 2332800, while the sum is 52.

The spelling of 13318593856 in words is "thirteen billion, three hundred eighteen million, five hundred ninety-three thousand, eight hundred fifty-six".