12729579723 has 24 divisors (see below), whose sum is σ = 21016958976. Its totient is φ = 7272990000.

The previous prime is 12729579713. The next prime is 12729579763. The reversal of 12729579723 is 32797592721.

It is a happy number.

12729579723 is a `hidden beast` number, since 1 + 27 + 29 + 579 + 7 + 23 = 666.

It is not a de Polignac number, because 12729579723 - 2⁶ = 12729579659 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12729579723.

It is not an unprimeable number, because it can be changed into a prime (12729579713) 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 23 ways as a sum of consecutive naturals, for example, 688348 + ... + 706598.

It is an arithmetic number, because the mean of its divisors is an integer number (875706624).

Almost surely, 2^12729579723 is an apocalyptic number.

12729579723 is a deficient number, since it is larger than the sum of its proper divisors (8287379253).

12729579723 is a wasteful number, since it uses less digits than its factorization.

12729579723 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29335 (or 29332 counting only the distinct ones).

The product of its digits is 3333960, while the sum is 54.

The spelling of 12729579723 in words is "twelve billion, seven hundred twenty-nine million, five hundred seventy-nine thousand, seven hundred twenty-three".