6805484456789 has 2 divisors, whose sum is σ = 6805484456790. Its totient is φ = 6805484456788.

The previous prime is 6805484456761. The next prime is 6805484456831. The reversal of 6805484456789 is 9876544845086.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4037620040689 + 2767864416100 = 2009383^2 + 1663690^2 .

It is a cyclic number.

It is not a de Polignac number, because 6805484456789 - 2²⁸ = 6805216021333 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6805484456389) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3402742228394 + 3402742228395.

It is an arithmetic number, because the mean of its divisors is an integer number (3402742228395).

Almost surely, 2^{6805484456789} is an apocalyptic number.

It is an amenable number.

6805484456789 is a deficient number, since it is larger than the sum of its proper divisors (1).

6805484456789 is an equidigital number, since it uses as much as digits as its factorization.

6805484456789 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1857945600, while the sum is 74.

The spelling of 6805484456789 in words is "six trillion, eight hundred five billion, four hundred eighty-four million, four hundred fifty-six thousand, seven hundred eighty-nine".