12447023579 has 4 divisors (see below), whose sum is σ = 12530560800. Its totient is φ = 12363486360.

The previous prime is 12447023539. The next prime is 12447023599. The reversal of 12447023579 is 97532074421.

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 12447023579 - 2²⁴ = 12430246363 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12447023539) 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 3 ways as a sum of consecutive naturals, for example, 41768387 + ... + 41768684.

It is an arithmetic number, because the mean of its divisors is an integer number (3132640200).

Almost surely, 2^12447023579 is an apocalyptic number.

12447023579 is a deficient number, since it is larger than the sum of its proper divisors (83537221).

12447023579 is an equidigital number, since it uses as much as digits as its factorization.

12447023579 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83537220.

The product of its (nonzero) digits is 423360, while the sum is 44.

The spelling of 12447023579 in words is "twelve billion, four hundred forty-seven million, twenty-three thousand, five hundred seventy-nine".