13568442381288 has 48 divisors (see below), whose sum is σ = 36756140331300. Its totient is φ = 4521795598080.

The previous prime is 13568442381287. The next prime is 13568442381311. The reversal of 13568442381288 is 88218324486531.

13568442381288 is a `hidden beast` number, since 1 + 3 + 5 + 6 + 84 + 423 + 8 + 128 + 8 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 12235290418404 + 1333151962884 = 3497898^2 + 1154622^2 .

It is not an unprimeable number, because it can be changed into a prime (13568442381287) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 20897383 + ... + 21536886.

Almost surely, 2^{13568442381288} is an apocalyptic number.

13568442381288 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

13568442381288 is an abundant number, since it is smaller than the sum of its proper divisors (23187697950012).

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

13568442381288 is a wasteful number, since it uses less digits than its factorization.

13568442381288 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42438722 (or 42438715 counting only the distinct ones).

The product of its digits is 70778880, while the sum is 63.

The spelling of 13568442381288 in words is "thirteen trillion, five hundred sixty-eight billion, four hundred forty-two million, three hundred eighty-one thousand, two hundred eighty-eight".