12443939913 has 8 divisors (see below), whose sum is σ = 16944939648. Its totient is φ = 8119450064.

The previous prime is 12443939903. The next prime is 12443939917. The reversal of 12443939913 is 31993934421.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12443939913 - 2⁴ = 12443939897 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12443939917) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 44127306 + ... + 44127587.

It is an arithmetic number, because the mean of its divisors is an integer number (2118117456).

Almost surely, 2^12443939913 is an apocalyptic number.

It is an amenable number.

12443939913 is a deficient number, since it is larger than the sum of its proper divisors (4500999735).

12443939913 is an equidigital number, since it uses as much as digits as its factorization.

12443939913 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88254943.

The product of its digits is 629856, while the sum is 48.

The spelling of 12443939913 in words is "twelve billion, four hundred forty-three million, nine hundred thirty-nine thousand, nine hundred thirteen".