12309055727 has 4 divisors (see below), whose sum is σ = 12367392696. Its totient is φ = 12250718760.

The previous prime is 12309055721. The next prime is 12309055769. The reversal of 12309055727 is 72755090321.

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 12309055727 - 2¹² = 12309051631 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 (12309055721) 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, 29168168 + ... + 29168589.

It is an arithmetic number, because the mean of its divisors is an integer number (3091848174).

Almost surely, 2^12309055727 is an apocalyptic number.

12309055727 is a deficient number, since it is larger than the sum of its proper divisors (58336969).

12309055727 is an equidigital number, since it uses as much as digits as its factorization.

12309055727 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58336968.

The product of its (nonzero) digits is 132300, while the sum is 41.

The spelling of 12309055727 in words is "twelve billion, three hundred nine million, fifty-five thousand, seven hundred twenty-seven".