13385733648 has 40 divisors (see below), whose sum is σ = 39519786048. Its totient is φ = 3824495232.

The previous prime is 13385733593. The next prime is 13385733671. The reversal of 13385733648 is 84633758331.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 13385733648.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19918911 + ... + 19919582.

Almost surely, 2^13385733648 is an apocalyptic number.

It is an amenable number.

13385733648 is an abundant number, since it is smaller than the sum of its proper divisors (26134052400).

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

13385733648 is a wasteful number, since it uses less digits than its factorization.

13385733648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39838511 (or 39838505 counting only the distinct ones).

The product of its digits is 4354560, while the sum is 51.

The spelling of 13385733648 in words is "thirteen billion, three hundred eighty-five million, seven hundred thirty-three thousand, six hundred forty-eight".