12487971427 has 2 divisors, whose sum is σ = 12487971428. Its totient is φ = 12487971426.

The previous prime is 12487971361. The next prime is 12487971437. The reversal of 12487971427 is 72417978421.

12487971427 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 an emirp because it is prime and its reverse (72417978421) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12487971427 is a prime.

It is not a weakly prime, because it can be changed into another prime (12487971437) 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, 6243985713 + 6243985714.

It is an arithmetic number, because the mean of its divisors is an integer number (6243985714).

Almost surely, 2^12487971427 is an apocalyptic number.

12487971427 is a deficient number, since it is larger than the sum of its proper divisors (1).

12487971427 is an equidigital number, since it uses as much as digits as its factorization.

12487971427 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1580544, while the sum is 52.

The spelling of 12487971427 in words is "twelve billion, four hundred eighty-seven million, nine hundred seventy-one thousand, four hundred twenty-seven".