220773783173 has 2 divisors, whose sum is σ = 220773783174. Its totient is φ = 220773783172.

The previous prime is 220773783163. The next prime is 220773783199. The reversal of 220773783173 is 371387377022.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 181239221284 + 39534561889 = 425722^2 + 198833^2 .

It is a cyclic number.

It is not a de Polignac number, because 220773783173 - 2²² = 220769588869 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (220773783103) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110386891586 + 110386891587.

It is an arithmetic number, because the mean of its divisors is an integer number (110386891587).

Almost surely, 2^220773783173 is an apocalyptic number.

It is an amenable number.

220773783173 is a deficient number, since it is larger than the sum of its proper divisors (1).

220773783173 is an equidigital number, since it uses as much as digits as its factorization.

220773783173 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2074464, while the sum is 50.

The spelling of 220773783173 in words is "two hundred twenty billion, seven hundred seventy-three million, seven hundred eighty-three thousand, one hundred seventy-three".