12998444479 has 4 divisors (see below), whose sum is σ = 13000361976. Its totient is φ = 12996526984.

The previous prime is 12998444419. The next prime is 12998444497. The reversal of 12998444479 is 97444489921.

12998444479 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 97444489921 = 312161².

It is a cyclic number.

It is not a de Polignac number, because 12998444479 - 2¹³ = 12998436287 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 (12998444419) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 948544 + ... + 962149.

It is an arithmetic number, because the mean of its divisors is an integer number (3250090494).

Almost surely, 2^12998444479 is an apocalyptic number.

12998444479 is a deficient number, since it is larger than the sum of its proper divisors (1917497).

12998444479 is an equidigital number, since it uses as much as digits as its factorization.

12998444479 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1917496.

The product of its digits is 20901888, while the sum is 61.

The spelling of 12998444479 in words is "twelve billion, nine hundred ninety-eight million, four hundred forty-four thousand, four hundred seventy-nine".