12812446847 has 4 divisors (see below), whose sum is σ = 13225751616. Its totient is φ = 12399142080.

The previous prime is 12812446817. The next prime is 12812446873. The reversal of 12812446847 is 74864421821.

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

It is a cyclic number.

It is not a de Polignac number, because 12812446847 - 2²² = 12808252543 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 (12812446817) 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, 206652338 + ... + 206652399.

It is an arithmetic number, because the mean of its divisors is an integer number (3306437904).

Almost surely, 2^12812446847 is an apocalyptic number.

12812446847 is a deficient number, since it is larger than the sum of its proper divisors (413304769).

12812446847 is an equidigital number, since it uses as much as digits as its factorization.

12812446847 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 413304768.

The product of its digits is 688128, while the sum is 47.

The spelling of 12812446847 in words is "twelve billion, eight hundred twelve million, four hundred forty-six thousand, eight hundred forty-seven".