12871457281 has 4 divisors (see below), whose sum is σ = 13034387200. Its totient is φ = 12708527364.

The previous prime is 12871457267. The next prime is 12871457293. The reversal of 12871457281 is 18275417821.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 12871457281 - 2⁷ = 12871457153 is a prime.

It is a super-2 number, since 2×12871457281² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12871452281) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 81464841 + ... + 81464998.

It is an arithmetic number, because the mean of its divisors is an integer number (3258596800).

Almost surely, 2^12871457281 is an apocalyptic number.

It is an amenable number.

12871457281 is a deficient number, since it is larger than the sum of its proper divisors (162929919).

12871457281 is an equidigital number, since it uses as much as digits as its factorization.

12871457281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 162929918.

The product of its digits is 250880, while the sum is 46.

The spelling of 12871457281 in words is "twelve billion, eight hundred seventy-one million, four hundred fifty-seven thousand, two hundred eighty-one".