13343981568 has 136 divisors (see below), whose sum is σ = 36150430368. Its totient is φ = 4377280512.

The previous prime is 13343981489. The next prime is 13343981569. The reversal of 13343981568 is 86518934331.

It is a self number, because there is not a number n which added to its sum of digits gives 13343981568.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13343981569) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13172230 + ... + 13173242.

It is an arithmetic number, because the mean of its divisors is an integer number (265811988).

Almost surely, 2^13343981568 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13343981568, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18075215184).

13343981568 is an abundant number, since it is smaller than the sum of its proper divisors (22806448800).

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

13343981568 is an frugal number, since it uses more digits than its factorization.

13343981568 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1115 (or 1085 counting only the distinct ones).

The product of its digits is 1866240, while the sum is 51.

The spelling of 13343981568 in words is "thirteen billion, three hundred forty-three million, nine hundred eighty-one thousand, five hundred sixty-eight".