12256403430543 has 8 divisors (see below), whose sum is σ = 17303157784368. Its totient is φ = 7690292348544.

The previous prime is 12256403430533. The next prime is 12256403430587. The reversal of 12256403430543 is 34503430465221.

12256403430543 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 12256403430543 - 2⁵ = 12256403430511 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12256403430495 and 12256403430504.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12256403430533) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 120160817896 + ... + 120160817997.

It is an arithmetic number, because the mean of its divisors is an integer number (2162894723046).

Almost surely, 2^{12256403430543} is an apocalyptic number.

12256403430543 is a deficient number, since it is larger than the sum of its proper divisors (5046754353825).

12256403430543 is a wasteful number, since it uses less digits than its factorization.

12256403430543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 240321635913.

The product of its (nonzero) digits is 1036800, while the sum is 42.

Adding to 12256403430543 its reverse (34503430465221), we get a palindrome (46759833895764).

The spelling of 12256403430543 in words is "twelve trillion, two hundred fifty-six billion, four hundred three million, four hundred thirty thousand, five hundred forty-three".