12860013605 has 16 divisors (see below), whose sum is σ = 15967551600. Its totient is φ = 9931138560.

The previous prime is 12860013587. The next prime is 12860013611. The reversal of 12860013605 is 50631006821.

It is a happy number.

12860013605 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Cunningham number, because it is equal to 113402²+1.

It can be written as a sum of positive squares in 8 ways, for example, as 4629713764 + 8230299841 = 68042^2 + 90721^2 .

It is not a de Polignac number, because 12860013605 - 2⁶ = 12860013541 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1279841 + ... + 1289849.

It is an arithmetic number, because the mean of its divisors is an integer number (997971975).

Almost surely, 2^12860013605 is an apocalyptic number.

It is an amenable number.

12860013605 is a deficient number, since it is larger than the sum of its proper divisors (3107537995).

12860013605 is a wasteful number, since it uses less digits than its factorization.

12860013605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18904.

The product of its (nonzero) digits is 8640, while the sum is 32.

The spelling of 12860013605 in words is "twelve billion, eight hundred sixty million, thirteen thousand, six hundred five".