12952727729 has 4 divisors (see below), whose sum is σ = 13080972660. Its totient is φ = 12824482800.

The previous prime is 12952727701. The next prime is 12952727731. The reversal of 12952727729 is 92772725921.

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 8042502400 + 4910225329 = 89680^2 + 70073^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12952727729 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12952727779) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 64122314 + ... + 64122515.

It is an arithmetic number, because the mean of its divisors is an integer number (3270243165).

Almost surely, 2^12952727729 is an apocalyptic number.

It is an amenable number.

12952727729 is a deficient number, since it is larger than the sum of its proper divisors (128244931).

12952727729 is a wasteful number, since it uses less digits than its factorization.

12952727729 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 128244930.

The product of its digits is 2222640, while the sum is 53.

The spelling of 12952727729 in words is "twelve billion, nine hundred fifty-two million, seven hundred twenty-seven thousand, seven hundred twenty-nine".