12981493324799 has 4 divisors (see below), whose sum is σ = 13002533022864. Its totient is φ = 12960453626736.

The previous prime is 12981493324759. The next prime is 12981493324831. The reversal of 12981493324799 is 99742339418921.

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 12981493324799 - 2⁴⁰ = 11881981697023 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 (12981493324759) 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, 10519848107 + ... + 10519849340.

It is an arithmetic number, because the mean of its divisors is an integer number (3250633255716).

Almost surely, 2^{12981493324799} is an apocalyptic number.

12981493324799 is a deficient number, since it is larger than the sum of its proper divisors (21039698065).

12981493324799 is an equidigital number, since it uses as much as digits as its factorization.

12981493324799 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21039698064.

The product of its digits is 211631616, while the sum is 71.

The spelling of 12981493324799 in words is "twelve trillion, nine hundred eighty-one billion, four hundred ninety-three million, three hundred twenty-four thousand, seven hundred ninety-nine".