13878968579406 has 48 divisors (see below), whose sum is σ = 35205188604768. Its totient is φ = 3868702041600.

The previous prime is 13878968579369. The next prime is 13878968579459. The reversal of 13878968579406 is 60497586987831.

13878968579406 is a `hidden beast` number, since 1 + 3 + 8 + 7 + 89 + 68 + 5 + 79 + 406 = 666.

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 (29) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1343294155 + ... + 1343304486.

It is an arithmetic number, because the mean of its divisors is an integer number (733441429266).

Almost surely, 2^{13878968579406} is an apocalyptic number.

13878968579406 is an abundant number, since it is smaller than the sum of its proper divisors (21326220025362).

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

13878968579406 is a wasteful number, since it uses less digits than its factorization.

13878968579406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2686598697 (or 2686598694 counting only the distinct ones).

The product of its (nonzero) digits is 4389396480, while the sum is 81.

The spelling of 13878968579406 in words is "thirteen trillion, eight hundred seventy-eight billion, nine hundred sixty-eight million, five hundred seventy-nine thousand, four hundred six".