13038403685 has 8 divisors (see below), whose sum is σ = 15751092600. Its totient is φ = 10360717504.

The previous prime is 13038403667. The next prime is 13038403709. The reversal of 13038403685 is 58630483031.

It can be written as a sum of positive squares in 4 ways, for example, as 604815649 + 12433588036 = 24593^2 + 111506^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 13038403685 - 2¹² = 13038399589 is a prime.

It is a Curzon number.

It is a congruent number.

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, 8749862 + ... + 8751351.

It is an arithmetic number, because the mean of its divisors is an integer number (1968886575).

Almost surely, 2^13038403685 is an apocalyptic number.

It is an amenable number.

13038403685 is a deficient number, since it is larger than the sum of its proper divisors (2712688915).

13038403685 is a wasteful number, since it uses less digits than its factorization.

13038403685 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17501367.

The product of its (nonzero) digits is 207360, while the sum is 41.

The spelling of 13038403685 in words is "thirteen billion, thirty-eight million, four hundred three thousand, six hundred eighty-five".