12729747551 has 2 divisors, whose sum is σ = 12729747552. Its totient is φ = 12729747550.

The previous prime is 12729747539. The next prime is 12729747559. The reversal of 12729747551 is 15574792721.

12729747551 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12729747551 - 2¹⁰ = 12729746527 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12729747551.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12729747559) 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 as a sum of consecutive naturals, namely, 6364873775 + 6364873776.

It is an arithmetic number, because the mean of its divisors is an integer number (6364873776).

Almost surely, 2^12729747551 is an apocalyptic number.

12729747551 is a deficient number, since it is larger than the sum of its proper divisors (1).

12729747551 is an equidigital number, since it uses as much as digits as its factorization.

12729747551 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1234800, while the sum is 50.

The spelling of 12729747551 in words is "twelve billion, seven hundred twenty-nine million, seven hundred forty-seven thousand, five hundred fifty-one".