12723223113305 has 4 divisors (see below), whose sum is σ = 15267867735972. Its totient is φ = 10178578490640.

The previous prime is 12723223113301. The next prime is 12723223113317. The reversal of 12723223113305 is 50331132232721.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 7338312580624 + 5384910532681 = 2708932^2 + 2320541^2 .

It is not a de Polignac number, because 12723223113305 - 2² = 12723223113301 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12723223113301) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1272322311326 + ... + 1272322311335.

It is an arithmetic number, because the mean of its divisors is an integer number (3816966933993).

Almost surely, 2^{12723223113305} is an apocalyptic number.

It is an amenable number.

12723223113305 is a deficient number, since it is larger than the sum of its proper divisors (2544644622667).

12723223113305 is an equidigital number, since it uses as much as digits as its factorization.

12723223113305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2544644622666.

The product of its (nonzero) digits is 45360, while the sum is 35.

The spelling of 12723223113305 in words is "twelve trillion, seven hundred twenty-three billion, two hundred twenty-three million, one hundred thirteen thousand, three hundred five".