12609073439 has 4 divisors (see below), whose sum is σ = 12705326040. Its totient is φ = 12512820840.

The previous prime is 12609073423. The next prime is 12609073447. The reversal of 12609073439 is 93437090621.

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 12609073439 - 2⁴ = 12609073423 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12609073439.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12609073489) 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, 48126104 + ... + 48126365.

It is an arithmetic number, because the mean of its divisors is an integer number (3176331510).

Almost surely, 2^12609073439 is an apocalyptic number.

12609073439 is a deficient number, since it is larger than the sum of its proper divisors (96252601).

12609073439 is an equidigital number, since it uses as much as digits as its factorization.

12609073439 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 96252600.

The product of its (nonzero) digits is 244944, while the sum is 44.

The spelling of 12609073439 in words is "twelve billion, six hundred nine million, seventy-three thousand, four hundred thirty-nine".