12318556373 has 2 divisors, whose sum is σ = 12318556374. Its totient is φ = 12318556372.

The previous prime is 12318556351. The next prime is 12318556379. The reversal of 12318556373 is 37365581321.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6370753489 + 5947802884 = 79817^2 + 77122^2 .

It is an emirp because it is prime and its reverse (37365581321) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12318556373 - 2¹² = 12318552277 is a prime.

It is a super-2 number, since 2×12318556373² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12318556379) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6159278186 + 6159278187.

It is an arithmetic number, because the mean of its divisors is an integer number (6159278187).

Almost surely, 2^12318556373 is an apocalyptic number.

It is an amenable number.

12318556373 is a deficient number, since it is larger than the sum of its proper divisors (1).

12318556373 is an equidigital number, since it uses as much as digits as its factorization.

12318556373 is an evil number, because the sum of its binary digits is even.

The product of its digits is 453600, while the sum is 44.

The spelling of 12318556373 in words is "twelve billion, three hundred eighteen million, five hundred fifty-six thousand, three hundred seventy-three".