12623679281 has 2 divisors, whose sum is σ = 12623679282. Its totient is φ = 12623679280.

The previous prime is 12623679253. The next prime is 12623679317. The reversal of 12623679281 is 18297632621.

12623679281 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10244678656 + 2379000625 = 101216^2 + 48775^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12623679281 is a prime.

It is a super-2 number, since 2×12623679281² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (12623679251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6311839640 + 6311839641.

It is an arithmetic number, because the mean of its divisors is an integer number (6311839641).

Almost surely, 2^12623679281 is an apocalyptic number.

It is an amenable number.

12623679281 is a deficient number, since it is larger than the sum of its proper divisors (1).

12623679281 is an equidigital number, since it uses as much as digits as its factorization.

12623679281 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 435456, while the sum is 47.

The spelling of 12623679281 in words is "twelve billion, six hundred twenty-three million, six hundred seventy-nine thousand, two hundred eighty-one".