12943944499 has 2 divisors, whose sum is σ = 12943944500. Its totient is φ = 12943944498.

The previous prime is 12943944491. The next prime is 12943944509. The reversal of 12943944499 is 99444934921.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12943944499 - 2³ = 12943944491 is a prime.

It is a super-2 number, since 2×12943944499² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (12943944491) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6471972249 + 6471972250.

It is an arithmetic number, because the mean of its divisors is an integer number (6471972250).

Almost surely, 2^12943944499 is an apocalyptic number.

12943944499 is a deficient number, since it is larger than the sum of its proper divisors (1).

12943944499 is an equidigital number, since it uses as much as digits as its factorization.

12943944499 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10077696, while the sum is 58.

The spelling of 12943944499 in words is "twelve billion, nine hundred forty-three million, nine hundred forty-four thousand, four hundred ninety-nine".