6345800556209 has 2 divisors, whose sum is σ = 6345800556210. Its totient is φ = 6345800556208.

The previous prime is 6345800556163. The next prime is 6345800556301. The reversal of 6345800556209 is 9026550085436.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3973830941809 + 2371969614400 = 1993447^2 + 1540120^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6345800556209 is a prime.

It is not a weakly prime, because it can be changed into another prime (6345800546209) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3172900278104 + 3172900278105.

It is an arithmetic number, because the mean of its divisors is an integer number (3172900278105).

Almost surely, 2^{6345800556209} is an apocalyptic number.

It is an amenable number.

6345800556209 is a deficient number, since it is larger than the sum of its proper divisors (1).

6345800556209 is an equidigital number, since it uses as much as digits as its factorization.

6345800556209 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7776000, while the sum is 53.

The spelling of 6345800556209 in words is "six trillion, three hundred forty-five billion, eight hundred million, five hundred fifty-six thousand, two hundred nine".