12347255077 has 2 divisors, whose sum is σ = 12347255078. Its totient is φ = 12347255076.

The previous prime is 12347255029. The next prime is 12347255101. The reversal of 12347255077 is 77055274321.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9739518721 + 2607736356 = 98689^2 + 51066^2 .

It is an emirp because it is prime and its reverse (77055274321) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12347255077 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12347255017) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6173627538 + 6173627539.

It is an arithmetic number, because the mean of its divisors is an integer number (6173627539).

Almost surely, 2^12347255077 is an apocalyptic number.

It is an amenable number.

12347255077 is a deficient number, since it is larger than the sum of its proper divisors (1).

12347255077 is an equidigital number, since it uses as much as digits as its factorization.

12347255077 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 411600, while the sum is 43.

The spelling of 12347255077 in words is "twelve billion, three hundred forty-seven million, two hundred fifty-five thousand, seventy-seven".