12347875777 has 2 divisors, whose sum is σ = 12347875778. Its totient is φ = 12347875776.

The previous prime is 12347875769. The next prime is 12347875807. The reversal of 12347875777 is 77757874321.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7631070736 + 4716805041 = 87356^2 + 68679^2 .

It is a cyclic number.

It is not a de Polignac number, because 12347875777 - 2³ = 12347875769 is a prime.

It is not a weakly prime, because it can be changed into another prime (12347872777) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6173937888 + 6173937889.

It is an arithmetic number, because the mean of its divisors is an integer number (6173937889).

Almost surely, 2^12347875777 is an apocalyptic number.

It is an amenable number.

12347875777 is a deficient number, since it is larger than the sum of its proper divisors (1).

12347875777 is an equidigital number, since it uses as much as digits as its factorization.

12347875777 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 16134720, while the sum is 58.

The spelling of 12347875777 in words is "twelve billion, three hundred forty-seven million, eight hundred seventy-five thousand, seven hundred seventy-seven".