13445555568 has 20 divisors (see below), whose sum is σ = 34734352008. Its totient is φ = 4481851840.

The previous prime is 13445555549. The next prime is 13445555593. The reversal of 13445555568 is 86555554431.

It is a plaindrome in base 10.

It is a self number, because there is not a number n which added to its sum of digits gives 13445555568.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 140057823 + ... + 140057918.

Almost surely, 2^13445555568 is an apocalyptic number.

It is an amenable number.

13445555568 is an abundant number, since it is smaller than the sum of its proper divisors (21288796440).

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

13445555568 is a wasteful number, since it uses less digits than its factorization.

13445555568 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 280115752 (or 280115746 counting only the distinct ones).

The product of its digits is 7200000, while the sum is 51.

The spelling of 13445555568 in words is "thirteen billion, four hundred forty-five million, five hundred fifty-five thousand, five hundred sixty-eight".