6842221947173 has 2 divisors, whose sum is σ = 6842221947174. Its totient is φ = 6842221947172.

The previous prime is 6842221947163. The next prime is 6842221947193. The reversal of 6842221947173 is 3717491222486.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3999228037249 + 2842993909924 = 1999807^2 + 1686118^2 .

It is a cyclic number.

It is not a de Polignac number, because 6842221947173 - 2²² = 6842217752869 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6842221947103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3421110973586 + 3421110973587.

It is an arithmetic number, because the mean of its divisors is an integer number (3421110973587).

Almost surely, 2^{6842221947173} is an apocalyptic number.

It is an amenable number.

6842221947173 is a deficient number, since it is larger than the sum of its proper divisors (1).

6842221947173 is an equidigital number, since it uses as much as digits as its factorization.

6842221947173 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8128512, while the sum is 56.

The spelling of 6842221947173 in words is "six trillion, eight hundred forty-two billion, two hundred twenty-one million, nine hundred forty-seven thousand, one hundred seventy-three".