12724186997 has 2 divisors, whose sum is σ = 12724186998. Its totient is φ = 12724186996.

The previous prime is 12724186991. The next prime is 12724186999. The reversal of 12724186997 is 79968142721.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11115695761 + 1608491236 = 105431^2 + 40106^2 .

It is an emirp because it is prime and its reverse (79968142721) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12724186997 - 2²² = 12719992693 is a prime.

Together with 12724186999, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12724186991) 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 as a sum of consecutive naturals, namely, 6362093498 + 6362093499.

It is an arithmetic number, because the mean of its divisors is an integer number (6362093499).

Almost surely, 2^12724186997 is an apocalyptic number.

It is an amenable number.

12724186997 is a deficient number, since it is larger than the sum of its proper divisors (1).

12724186997 is an equidigital number, since it uses as much as digits as its factorization.

12724186997 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3048192, while the sum is 56.

The spelling of 12724186997 in words is "twelve billion, seven hundred twenty-four million, one hundred eighty-six thousand, nine hundred ninety-seven".