13553068668 has 12 divisors (see below), whose sum is σ = 31623826920. Its totient is φ = 4517689552.

The previous prime is 13553068637. The next prime is 13553068679. The reversal of 13553068668 is 86686035531.

It is a tau number, because it is divible by the number of its divisors (12).

It is a self number, because there is not a number n which added to its sum of digits gives 13553068668.

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, 564711183 + ... + 564711206.

It is an arithmetic number, because the mean of its divisors is an integer number (2635318910).

Almost surely, 2^13553068668 is an apocalyptic number.

It is an amenable number.

13553068668 is an abundant number, since it is smaller than the sum of its proper divisors (18070758252).

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

13553068668 is a wasteful number, since it uses less digits than its factorization.

13553068668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1129422396 (or 1129422394 counting only the distinct ones).

The product of its (nonzero) digits is 3110400, while the sum is 51.

The spelling of 13553068668 in words is "thirteen billion, five hundred fifty-three million, sixty-eight thousand, six hundred sixty-eight".