12871928481917 has 4 divisors (see below), whose sum is σ = 13064046817536. Its totient is φ = 12679810146300.

The previous prime is 12871928481887. The next prime is 12871928481941. The reversal of 12871928481917 is 71918482917821.

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 12871928481917 - 2⁸ = 12871928481661 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12871928481967) 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, 96059167709 + ... + 96059167842.

It is an arithmetic number, because the mean of its divisors is an integer number (3266011704384).

Almost surely, 2^{12871928481917} is an apocalyptic number.

It is an amenable number.

12871928481917 is a deficient number, since it is larger than the sum of its proper divisors (192118335619).

12871928481917 is an equidigital number, since it uses as much as digits as its factorization.

12871928481917 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 192118335618.

The product of its digits is 32514048, while the sum is 68.

The spelling of 12871928481917 in words is "twelve trillion, eight hundred seventy-one billion, nine hundred twenty-eight million, four hundred eighty-one thousand, nine hundred seventeen".