6780443443 has 2 divisors, whose sum is σ = 6780443444. Its totient is φ = 6780443442.

The previous prime is 6780443441. The next prime is 6780443497. The reversal of 6780443443 is 3443440876.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 6780443443 - 2¹ = 6780443441 is a prime.

Together with 6780443441, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 6780443443.

It is not a weakly prime, because it can be changed into another prime (6780443441) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3390221721 + 3390221722.

It is an arithmetic number, because the mean of its divisors is an integer number (3390221722).

Almost surely, 2^6780443443 is an apocalyptic number.

6780443443 is a deficient number, since it is larger than the sum of its proper divisors (1).

6780443443 is an equidigital number, since it uses as much as digits as its factorization.

6780443443 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 774144, while the sum is 43.

The square root of 6780443443 is about 82343.4480878716. The cubic root of 6780443443 is about 1892.7185240702.

The spelling of 6780443443 in words is "six billion, seven hundred eighty million, four hundred forty-three thousand, four hundred forty-three".