12566035543 has 2 divisors, whose sum is σ = 12566035544. Its totient is φ = 12566035542.

The previous prime is 12566035513. The next prime is 12566035561. The reversal of 12566035543 is 34553066521.

It is a strong prime.

It is an emirp because it is prime and its reverse (34553066521) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12566035543 - 2²¹ = 12563938391 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12566035496 and 12566035505.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12566035513) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6283017771 + 6283017772.

It is an arithmetic number, because the mean of its divisors is an integer number (6283017772).

Almost surely, 2^12566035543 is an apocalyptic number.

12566035543 is a deficient number, since it is larger than the sum of its proper divisors (1).

12566035543 is an equidigital number, since it uses as much as digits as its factorization.

12566035543 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 324000, while the sum is 40.

The spelling of 12566035543 in words is "twelve billion, five hundred sixty-six million, thirty-five thousand, five hundred forty-three".