13538656586 has 80 divisors (see below), whose sum is σ = 25693406400. Its totient is φ = 5348201040.

The previous prime is 13538656541. The next prime is 13538656591. The reversal of 13538656586 is 68565683531.

13538656586 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon 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 39 ways as a sum of consecutive naturals, for example, 19592501 + ... + 19593191.

It is an arithmetic number, because the mean of its divisors is an integer number (321167580).

Almost surely, 2^13538656586 is an apocalyptic number.

13538656586 is a deficient number, since it is larger than the sum of its proper divisors (12154749814).

13538656586 is an frugal number, since it uses more digits than its factorization.

13538656586 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 766 (or 713 counting only the distinct ones).

The product of its digits is 15552000, while the sum is 56.

The spelling of 13538656586 in words is "thirteen billion, five hundred thirty-eight million, six hundred fifty-six thousand, five hundred eighty-six".