12871666131 has 8 divisors (see below), whose sum is σ = 17163819264. Its totient is φ = 8580311880.

The previous prime is 12871666117. The next prime is 12871666163. The reversal of 12871666131 is 13166617821.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 12871666131 - 2⁹ = 12871665619 is a prime.

It is a super-2 number, since 2×12871666131² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12871666531) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 161055 + ... + 227336.

It is an arithmetic number, because the mean of its divisors is an integer number (2145477408).

Almost surely, 2^12871666131 is an apocalyptic number.

12871666131 is a deficient number, since it is larger than the sum of its proper divisors (4292153133).

12871666131 is a wasteful number, since it uses less digits than its factorization.

12871666131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 399441.

The product of its digits is 72576, while the sum is 42.

The spelling of 12871666131 in words is "twelve billion, eight hundred seventy-one million, six hundred sixty-six thousand, one hundred thirty-one".