12727817497 has 4 divisors (see below), whose sum is σ = 12728563236. Its totient is φ = 12727071760.

The previous prime is 12727817471. The next prime is 12727817503. The reversal of 12727817497 is 79471872721.

It is a happy number.

12727817497 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 2733616656 + 9994200841 = 52284^2 + 99971^2 .

It is a cyclic number.

It is not a de Polignac number, because 12727817497 - 2¹¹ = 12727815449 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12727817437) 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 3 ways as a sum of consecutive naturals, for example, 346654 + ... + 381607.

It is an arithmetic number, because the mean of its divisors is an integer number (3182140809).

Almost surely, 2^12727817497 is an apocalyptic number.

It is an amenable number.

12727817497 is a deficient number, since it is larger than the sum of its proper divisors (745739).

12727817497 is an equidigital number, since it uses as much as digits as its factorization.

12727817497 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 745738.

The product of its digits is 2765952, while the sum is 55.

The spelling of 12727817497 in words is "twelve billion, seven hundred twenty-seven million, eight hundred seventeen thousand, four hundred ninety-seven".