12433121543 has 2 divisors, whose sum is σ = 12433121544. Its totient is φ = 12433121542.

The previous prime is 12433121537. The next prime is 12433121557. The reversal of 12433121543 is 34512133421.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12433121543 - 2⁸ = 12433121287 is a prime.

It is a super-2 number, since 2×12433121543² (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 (12433120543) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6216560771 + 6216560772.

It is an arithmetic number, because the mean of its divisors is an integer number (6216560772).

Almost surely, 2^12433121543 is an apocalyptic number.

12433121543 is a deficient number, since it is larger than the sum of its proper divisors (1).

12433121543 is an equidigital number, since it uses as much as digits as its factorization.

12433121543 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8640, while the sum is 29.

Adding to 12433121543 its reverse (34512133421), we get a palindrome (46945254964).

The spelling of 12433121543 in words is "twelve billion, four hundred thirty-three million, one hundred twenty-one thousand, five hundred forty-three".