12426226543 has 2 divisors, whose sum is σ = 12426226544. Its totient is φ = 12426226542.

The previous prime is 12426226529. The next prime is 12426226567. The reversal of 12426226543 is 34562262421.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12426226543 - 2⁵ = 12426226511 is a prime.

It is a super-2 number, since 2×12426226543² (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 (12426226523) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6213113271 + 6213113272.

It is an arithmetic number, because the mean of its divisors is an integer number (6213113272).

Almost surely, 2^12426226543 is an apocalyptic number.

12426226543 is a deficient number, since it is larger than the sum of its proper divisors (1).

12426226543 is an equidigital number, since it uses as much as digits as its factorization.

12426226543 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 138240, while the sum is 37.

Adding to 12426226543 its reverse (34562262421), we get a palindrome (46988488964).

The spelling of 12426226543 in words is "twelve billion, four hundred twenty-six million, two hundred twenty-six thousand, five hundred forty-three".