13178638116 has 120 divisors (see below), whose sum is σ = 39872152320. Its totient is φ = 3717612288.

The previous prime is 13178638043. The next prime is 13178638169. The reversal of 13178638116 is 61183687131.

13178638116 is a `hidden beast` number, since 1 + 3 + 1 + 7 + 8 + 638 + 1 + 1 + 6 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 142396 + ... + 215948.

It is an arithmetic number, because the mean of its divisors is an integer number (332267936).

Almost surely, 2^13178638116 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13178638116, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19936076160).

13178638116 is an abundant number, since it is smaller than the sum of its proper divisors (26693514204).

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

13178638116 is a wasteful number, since it uses less digits than its factorization.

13178638116 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73655 (or 73644 counting only the distinct ones).

The product of its digits is 145152, while the sum is 45.

The spelling of 13178638116 in words is "thirteen billion, one hundred seventy-eight million, six hundred thirty-eight thousand, one hundred sixteen".