12881644829 has 4 divisors (see below), whose sum is σ = 12885317280. Its totient is φ = 12877972380.

The previous prime is 12881644823. The next prime is 12881644837. The reversal of 12881644829 is 92844618821.

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 a de Polignac number, because none of the positive numbers 2^k-12881644829 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 (12881644823) 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, 1830959 + ... + 1837980.

It is an arithmetic number, because the mean of its divisors is an integer number (3221329320).

Almost surely, 2^12881644829 is an apocalyptic number.

It is an amenable number.

12881644829 is a deficient number, since it is larger than the sum of its proper divisors (3672451).

12881644829 is an equidigital number, since it uses as much as digits as its factorization.

12881644829 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3672450.

The product of its digits is 1769472, while the sum is 53.

The spelling of 12881644829 in words is "twelve billion, eight hundred eighty-one million, six hundred forty-four thousand, eight hundred twenty-nine".