12656875362871 has 4 divisors (see below), whose sum is σ = 12656905811352. Its totient is φ = 12656844914392.

The previous prime is 12656875362829. The next prime is 12656875362913. The reversal of 12656875362871 is 17826357865621.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (12656875362829) and next prime (12656875362913).

It is a cyclic number.

It is not a de Polignac number, because 12656875362871 - 2¹⁹ = 12656874838583 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12656875362797 and 12656875362806.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12656875363871) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14591965 + ... + 15434998.

It is an arithmetic number, because the mean of its divisors is an integer number (3164226452838).

Almost surely, 2^{12656875362871} is an apocalyptic number.

12656875362871 is a deficient number, since it is larger than the sum of its proper divisors (30448481).

12656875362871 is an equidigital number, since it uses as much as digits as its factorization.

12656875362871 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30448480.

The product of its digits is 203212800, while the sum is 67.

The spelling of 12656875362871 in words is "twelve trillion, six hundred fifty-six billion, eight hundred seventy-five million, three hundred sixty-two thousand, eight hundred seventy-one".