12871666132 has 12 divisors (see below), whose sum is σ = 24258140116. Its totient is φ = 5940768960.

The previous prime is 12871666117. The next prime is 12871666163. The reversal of 12871666132 is 23166617821.

It can be written as a sum of positive squares in 2 ways, for example, as 7329756996 + 5541909136 = 85614^2 + 74444^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 123765969 + ... + 123766072.

Almost surely, 2^12871666132 is an apocalyptic number.

It is an amenable number.

12871666132 is a deficient number, since it is larger than the sum of its proper divisors (11386473984).

12871666132 is a wasteful number, since it uses less digits than its factorization.

12871666132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 247532058 (or 247532056 counting only the distinct ones).

The product of its digits is 145152, while the sum is 43.

The spelling of 12871666132 in words is "twelve billion, eight hundred seventy-one million, six hundred sixty-six thousand, one hundred thirty-two".