6436143443 has 4 divisors (see below), whose sum is σ = 6545230680. Its totient is φ = 6327056208.

The previous prime is 6436143437. The next prime is 6436143473. The reversal of 6436143443 is 3443416346.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3443416346 = 2 ⋅1721708173.

It is a cyclic number.

It is not a de Polignac number, because 6436143443 - 2²⁴ = 6419366227 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 6436143397 and 6436143406.

It is not an unprimeable number, because it can be changed into a prime (6436143473) 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, 54543530 + ... + 54543647.

It is an arithmetic number, because the mean of its divisors is an integer number (1636307670).

Almost surely, 2^6436143443 is an apocalyptic number.

6436143443 is a deficient number, since it is larger than the sum of its proper divisors (109087237).

6436143443 is a wasteful number, since it uses less digits than its factorization.

6436143443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109087236.

The product of its digits is 248832, while the sum is 38.

The square root of 6436143443 is about 80225.5784834239. The cubic root of 6436143443 is about 1860.1240371862.

Adding to 6436143443 its reverse (3443416346), we get a palindrome (9879559789).

The spelling of 6436143443 in words is "six billion, four hundred thirty-six million, one hundred forty-three thousand, four hundred forty-three".