12443773609 has 8 divisors (see below), whose sum is σ = 12585938760. Its totient is φ = 12301660800.

The previous prime is 12443773583. The next prime is 12443773673. The reversal of 12443773609 is 90637734421.

It can be written as a sum of positive squares in 4 ways, for example, as 1040400 + 12442733209 = 1020^2 + 111547^2 .

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 12443773609 - 2²⁵ = 12410219177 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12443770609) 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, 661879 + ... + 680419.

It is an arithmetic number, because the mean of its divisors is an integer number (1573242345).

Almost surely, 2^12443773609 is an apocalyptic number.

It is an amenable number.

12443773609 is a deficient number, since it is larger than the sum of its proper divisors (142165151).

12443773609 is an equidigital number, since it uses as much as digits as its factorization.

12443773609 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26171.

The product of its (nonzero) digits is 762048, while the sum is 46.

The spelling of 12443773609 in words is "twelve billion, four hundred forty-three million, seven hundred seventy-three thousand, six hundred nine".