#include <random>
#include <string>
#include <iostream>
#include <algorithm>
using namespace std;
string s;
int gcd(int x, int y) {
	if (y == 0) return x;
	return gcd(y, x % y);
}
int main() {
	cin.tie(0);
	ios_base::sync_with_stdio(false);
	cin >> s;
	bool same = true;
	for (int i = 1; i < s.size(); i++) {
		if (i >= 1 && s[i] != s[i - 1]) same = false;
	}
	if (same) cout << s << '\n';
	else {
		int ret = 64 * 81 * 25 * 49;
		int bit = 0, cur = 0;
		for (int i = 0; i < s.size(); i++) {
			bit |= 1 << (s[i] - '0');
			cur = (cur * 10 + (s[i] - '0')) % ret;
		}
		ret = gcd(ret, cur);
		for (int i = 0; i < 10; i++) {
			for (int j = i + 1; j < 10; j++) {
				if (((bit >> i) & 1) && ((bit >> j) & 1)) {
					ret = gcd(ret, (j - i) * 9);
				}
			}
		}
		cout << ret << endl;
	}
	return 0;
}