12559442143 has 4 divisors (see below), whose sum is σ = 12571280568. Its totient is φ = 12547603720.

The previous prime is 12559442117. The next prime is 12559442167. The reversal of 12559442143 is 34124495521.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 12559442143 - 2¹³ = 12559433951 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12559442096 and 12559442105.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12559442173) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5917621 + ... + 5919742.

It is an arithmetic number, because the mean of its divisors is an integer number (3142820142).

Almost surely, 2^12559442143 is an apocalyptic number.

12559442143 is a deficient number, since it is larger than the sum of its proper divisors (11838425).

12559442143 is a wasteful number, since it uses less digits than its factorization.

12559442143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11838424.

The product of its digits is 172800, while the sum is 40.

The spelling of 12559442143 in words is "twelve billion, five hundred fifty-nine million, four hundred forty-two thousand, one hundred forty-three".