12341421520543 has 2 divisors, whose sum is σ = 12341421520544. Its totient is φ = 12341421520542.

The previous prime is 12341421520469. The next prime is 12341421520573. The reversal of 12341421520543 is 34502512414321.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12341421520543 - 2³⁷ = 12203982567071 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12341421520573) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6170710760271 + 6170710760272.

It is an arithmetic number, because the mean of its divisors is an integer number (6170710760272).

Almost surely, 2^{12341421520543} is an apocalyptic number.

12341421520543 is a deficient number, since it is larger than the sum of its proper divisors (1).

12341421520543 is an equidigital number, since it uses as much as digits as its factorization.

12341421520543 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 115200, while the sum is 37.

Adding to 12341421520543 its reverse (34502512414321), we get a palindrome (46843933934864).

The spelling of 12341421520543 in words is "twelve trillion, three hundred forty-one billion, four hundred twenty-one million, five hundred twenty thousand, five hundred forty-three".