12452543429 has 2 divisors, whose sum is σ = 12452543430. Its totient is φ = 12452543428.

The previous prime is 12452543393. The next prime is 12452543443. The reversal of 12452543429 is 92434525421.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9550566529 + 2901976900 = 97727^2 + 53870^2 .

It is a cyclic number.

It is not a de Polignac number, because 12452543429 - 2²⁸ = 12184107973 is a prime.

It is a super-2 number, since 2×12452543429² (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 (12452543449) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6226271714 + 6226271715.

It is an arithmetic number, because the mean of its divisors is an integer number (6226271715).

Almost surely, 2^12452543429 is an apocalyptic number.

It is an amenable number.

12452543429 is a deficient number, since it is larger than the sum of its proper divisors (1).

12452543429 is an equidigital number, since it uses as much as digits as its factorization.

12452543429 is an evil number, because the sum of its binary digits is even.

The product of its digits is 345600, while the sum is 41.

The spelling of 12452543429 in words is "twelve billion, four hundred fifty-two million, five hundred forty-three thousand, four hundred twenty-nine".