12318613477 has 2 divisors, whose sum is σ = 12318613478. Its totient is φ = 12318613476.

The previous prime is 12318613471. The next prime is 12318613511. The reversal of 12318613477 is 77431681321.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8997281316 + 3321332161 = 94854^2 + 57631^2 .

It is an emirp because it is prime and its reverse (77431681321) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12318613477 - 2¹¹ = 12318611429 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12318613471) 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, 6159306738 + 6159306739.

It is an arithmetic number, because the mean of its divisors is an integer number (6159306739).

Almost surely, 2^12318613477 is an apocalyptic number.

It is an amenable number.

12318613477 is a deficient number, since it is larger than the sum of its proper divisors (1).

12318613477 is an equidigital number, since it uses as much as digits as its factorization.

12318613477 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 169344, while the sum is 43.

The spelling of 12318613477 in words is "twelve billion, three hundred eighteen million, six hundred thirteen thousand, four hundred seventy-seven".