13855318686 has 48 divisors (see below), whose sum is σ = 33019644528. Its totient is φ = 4198574160.

The previous prime is 13855318649. The next prime is 13855318721. The reversal of 13855318686 is 68681355831.

13855318686 is a `hidden beast` number, since 1 + 3 + 8 + 553 + 1 + 8 + 6 + 86 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 265201 + ... + 313116.

It is an arithmetic number, because the mean of its divisors is an integer number (687909261).

Almost surely, 2^13855318686 is an apocalyptic number.

13855318686 is an abundant number, since it is smaller than the sum of its proper divisors (19164325842).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13855318686 is a wasteful number, since it uses less digits than its factorization.

13855318686 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 578358 (or 578333 counting only the distinct ones).

The product of its digits is 4147200, while the sum is 54.

The spelling of 13855318686 in words is "thirteen billion, eight hundred fifty-five million, three hundred eighteen thousand, six hundred eighty-six".