12722513209 has 16 divisors (see below), whose sum is σ = 14730232320. Its totient is φ = 10762464960.

The previous prime is 12722513201. The next prime is 12722513263. The reversal of 12722513209 is 90231522721.

12722513209 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 12722513209 - 2³ = 12722513201 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12722513201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2415639 + ... + 2420899.

It is an arithmetic number, because the mean of its divisors is an integer number (920639520).

Almost surely, 2^12722513209 is an apocalyptic number.

It is an amenable number.

12722513209 is a deficient number, since it is larger than the sum of its proper divisors (2007719111).

12722513209 is an equidigital number, since it uses as much as digits as its factorization.

12722513209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9720.

The product of its (nonzero) digits is 15120, while the sum is 34.

The spelling of 12722513209 in words is "twelve billion, seven hundred twenty-two million, five hundred thirteen thousand, two hundred nine".