12457911443 has 2 divisors, whose sum is σ = 12457911444. Its totient is φ = 12457911442.

The previous prime is 12457911439. The next prime is 12457911467. The reversal of 12457911443 is 34411975421.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12457911443 - 2² = 12457911439 is a prime.

It is a Sophie Germain prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12457911443.

It is not a weakly prime, because it can be changed into another prime (12457911943) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6228955721 + 6228955722.

It is an arithmetic number, because the mean of its divisors is an integer number (6228955722).

Almost surely, 2^12457911443 is an apocalyptic number.

12457911443 is a deficient number, since it is larger than the sum of its proper divisors (1).

12457911443 is an equidigital number, since it uses as much as digits as its factorization.

12457911443 is an evil number, because the sum of its binary digits is even.

The product of its digits is 120960, while the sum is 41.

The spelling of 12457911443 in words is "twelve billion, four hundred fifty-seven million, nine hundred eleven thousand, four hundred forty-three".