13863861128 has 16 divisors (see below), whose sum is σ = 27994335180. Its totient is φ = 6398705088.

The previous prime is 13863861083. The next prime is 13863861149. The reversal of 13863861128 is 82116836831.

It can be written as a sum of positive squares in 2 ways, for example, as 12548928484 + 1314932644 = 112022^2 + 36262^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 66653075 + ... + 66653282.

Almost surely, 2^13863861128 is an apocalyptic number.

It is an amenable number.

13863861128 is an abundant number, since it is smaller than the sum of its proper divisors (14130474052).

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

13863861128 is a wasteful number, since it uses less digits than its factorization.

13863861128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 133306376 (or 133306372 counting only the distinct ones).

The product of its digits is 331776, while the sum is 47.

The spelling of 13863861128 in words is "thirteen billion, eight hundred sixty-three million, eight hundred sixty-one thousand, one hundred twenty-eight".