13557685639 has 8 divisors (see below), whose sum is σ = 14358303360. Its totient is φ = 12774664056.

The previous prime is 13557685627. The next prime is 13557685667. The reversal of 13557685639 is 93658675531.

13557685639 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 13557685639 - 2¹³ = 13557677447 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13557685679) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 4397449 + ... + 4400530.

It is an arithmetic number, because the mean of its divisors is an integer number (1794787920).

Almost surely, 2^13557685639 is an apocalyptic number.

13557685639 is a deficient number, since it is larger than the sum of its proper divisors (800617721).

13557685639 is an equidigital number, since it uses as much as digits as its factorization.

13557685639 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8798069.

The product of its digits is 20412000, while the sum is 58.

The spelling of 13557685639 in words is "thirteen billion, five hundred fifty-seven million, six hundred eighty-five thousand, six hundred thirty-nine".