6543212239 has 2 divisors, whose sum is σ = 6543212240. Its totient is φ = 6543212238.

The previous prime is 6543212231. The next prime is 6543212323. The reversal of 6543212239 is 9322123456.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 6543212239 - 2³ = 6543212231 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 6543212198 and 6543212207.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6543212231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3271606119 + 3271606120.

It is an arithmetic number, because the mean of its divisors is an integer number (3271606120).

Almost surely, 2^6543212239 is an apocalyptic number.

6543212239 is a deficient number, since it is larger than the sum of its proper divisors (1).

6543212239 is an equidigital number, since it uses as much as digits as its factorization.

6543212239 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 77760, while the sum is 37.

The square root of 6543212239 is about 80890.1244837712. The cubic root of 6543212239 is about 1870.3820927024.

The spelling of 6543212239 in words is "six billion, five hundred forty-three million, two hundred twelve thousand, two hundred thirty-nine".