13338925685 has 32 divisors (see below), whose sum is σ = 16631952480. Its totient is φ = 10261582848.

The previous prime is 13338925669. The next prime is 13338925711. The reversal of 13338925685 is 58652983331.

It can be written as a sum of positive squares in 16 ways, for example, as 4838454481 + 8500471204 = 69559^2 + 92198^2 .

It is a cyclic number.

It is not a de Polignac number, because 13338925685 - 2⁴ = 13338925669 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 13167239 + ... + 13168251.

It is an arithmetic number, because the mean of its divisors is an integer number (519748515).

Almost surely, 2^13338925685 is an apocalyptic number.

It is an amenable number.

13338925685 is a deficient number, since it is larger than the sum of its proper divisors (3293026795).

13338925685 is a wasteful number, since it uses less digits than its factorization.

13338925685 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1817.

The product of its digits is 4665600, while the sum is 53.

The spelling of 13338925685 in words is "thirteen billion, three hundred thirty-eight million, nine hundred twenty-five thousand, six hundred eighty-five".