13871442128 has 20 divisors (see below), whose sum is σ = 28456856100. Its totient is φ = 6527737344.

The previous prime is 13871442127. The next prime is 13871442161. The reversal of 13871442128 is 82124417831.

13871442128 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 12560133184 + 1311308944 = 112072^2 + 36212^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13871442121) 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 3 ways as a sum of consecutive naturals, for example, 25498703 + ... + 25499246.

It is an arithmetic number, because the mean of its divisors is an integer number (1422842805).

Almost surely, 2^13871442128 is an apocalyptic number.

It is an amenable number.

13871442128 is an abundant number, since it is smaller than the sum of its proper divisors (14585413972).

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

13871442128 is a wasteful number, since it uses less digits than its factorization.

13871442128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50997974 (or 50997968 counting only the distinct ones).

The product of its digits is 86016, while the sum is 41.

Adding to 13871442128 its reverse (82124417831), we get a palindrome (95995859959).

The spelling of 13871442128 in words is "thirteen billion, eight hundred seventy-one million, four hundred forty-two thousand, one hundred twenty-eight".