6780226545809 has 2 divisors, whose sum is σ = 6780226545810. Its totient is φ = 6780226545808.

The previous prime is 6780226545767. The next prime is 6780226545853. The reversal of 6780226545809 is 9085456220876.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6748694730625 + 31531815184 = 2597825^2 + 177572^2 .

It is a cyclic number.

It is not a de Polignac number, because 6780226545809 - 2⁸ = 6780226545553 is a prime.

It is not a weakly prime, because it can be changed into another prime (6780226545899) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3390113272904 + 3390113272905.

It is an arithmetic number, because the mean of its divisors is an integer number (3390113272905).

Almost surely, 2^{6780226545809} is an apocalyptic number.

It is an amenable number.

6780226545809 is a deficient number, since it is larger than the sum of its proper divisors (1).

6780226545809 is an equidigital number, since it uses as much as digits as its factorization.

6780226545809 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 58060800, while the sum is 62.

The spelling of 6780226545809 in words is "six trillion, seven hundred eighty billion, two hundred twenty-six million, five hundred forty-five thousand, eight hundred nine".