12312766559 has 2 divisors, whose sum is σ = 12312766560. Its totient is φ = 12312766558.

The previous prime is 12312766493. The next prime is 12312766561. The reversal of 12312766559 is 95566721321.

It is a strong prime.

It is an emirp because it is prime and its reverse (95566721321) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12312766559 - 2¹² = 12312762463 is a prime.

Together with 12312766561, 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 (12312766259) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6156383279 + 6156383280.

It is an arithmetic number, because the mean of its divisors is an integer number (6156383280).

Almost surely, 2^12312766559 is an apocalyptic number.

12312766559 is a deficient number, since it is larger than the sum of its proper divisors (1).

12312766559 is an equidigital number, since it uses as much as digits as its factorization.

12312766559 is an evil number, because the sum of its binary digits is even.

The product of its digits is 680400, while the sum is 47.

The spelling of 12312766559 in words is "twelve billion, three hundred twelve million, seven hundred sixty-six thousand, five hundred fifty-nine".