13385806912 has 28 divisors (see below), whose sum is σ = 26806166860. Its totient is φ = 6631497216.

The previous prime is 13385806909. The next prime is 13385806937. The reversal of 13385806912 is 21960858331.

It can be written as a sum of positive squares in 2 ways, for example, as 10147741696 + 3238065216 = 100736^2 + 56904^2 .

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, 952443 + ... + 966394.

Almost surely, 2^13385806912 is an apocalyptic number.

It is an amenable number.

13385806912 is an abundant number, since it is smaller than the sum of its proper divisors (13420359948).

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

13385806912 is a wasteful number, since it uses less digits than its factorization.

13385806912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1918958 (or 1918948 counting only the distinct ones).

The product of its (nonzero) digits is 311040, while the sum is 46.

The spelling of 13385806912 in words is "thirteen billion, three hundred eighty-five million, eight hundred six thousand, nine hundred twelve".