12666984293 has 2 divisors, whose sum is σ = 12666984294. Its totient is φ = 12666984292.

The previous prime is 12666984229. The next prime is 12666984301. The reversal of 12666984293 is 39248966621.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11688420769 + 978563524 = 108113^2 + 31282^2 .

It is a cyclic number.

It is not a de Polignac number, because 12666984293 - 2⁶ = 12666984229 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12666984193) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6333492146 + 6333492147.

It is an arithmetic number, because the mean of its divisors is an integer number (6333492147).

Almost surely, 2^12666984293 is an apocalyptic number.

It is an amenable number.

12666984293 is a deficient number, since it is larger than the sum of its proper divisors (1).

12666984293 is an equidigital number, since it uses as much as digits as its factorization.

12666984293 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6718464, while the sum is 56.

The spelling of 12666984293 in words is "twelve billion, six hundred sixty-six million, nine hundred eighty-four thousand, two hundred ninety-three".