6432278689 has 2 divisors, whose sum is σ = 6432278690. Its totient is φ = 6432278688.

The previous prime is 6432278687. The next prime is 6432278719. The reversal of 6432278689 is 9868722346.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4813584400 + 1618694289 = 69380^2 + 40233^2 .

It is a cyclic number.

It is not a de Polignac number, because 6432278689 - 2¹ = 6432278687 is a prime.

Together with 6432278687, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (6432278681) 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, 3216139344 + 3216139345.

It is an arithmetic number, because the mean of its divisors is an integer number (3216139345).

Almost surely, 2^6432278689 is an apocalyptic number.

It is an amenable number.

6432278689 is a deficient number, since it is larger than the sum of its proper divisors (1).

6432278689 is an equidigital number, since it uses as much as digits as its factorization.

6432278689 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6967296, while the sum is 55.

The square root of 6432278689 is about 80201.4880722297. The cubic root of 6432278689 is about 1859.7516422739.

The spelling of 6432278689 in words is "six billion, four hundred thirty-two million, two hundred seventy-eight thousand, six hundred eighty-nine".