6443075243 has 4 divisors (see below), whose sum is σ = 7028809368. Its totient is φ = 5857341120.

The previous prime is 6443075239. The next prime is 6443075273. The reversal of 6443075243 is 3425703446.

6443075243 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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 6443075243 - 2² = 6443075239 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 6443075197 and 6443075206.

It is not an unprimeable number, because it can be changed into a prime (6443075213) 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, 292867046 + ... + 292867067.

It is an arithmetic number, because the mean of its divisors is an integer number (1757202342).

Almost surely, 2^6443075243 is an apocalyptic number.

6443075243 is a deficient number, since it is larger than the sum of its proper divisors (585734125).

6443075243 is a wasteful number, since it uses less digits than its factorization.

6443075243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 585734124.

The product of its (nonzero) digits is 241920, while the sum is 38.

The square root of 6443075243 is about 80268.7687896108. The cubic root of 6443075243 is about 1860.7915892011.

Adding to 6443075243 its reverse (3425703446), we get a palindrome (9868778689).

The spelling of 6443075243 in words is "six billion, four hundred forty-three million, seventy-five thousand, two hundred forty-three".