#include <algorithm>
#include <iostream>
#include <vector>
#include <math.h>
#include <set>
#include <map>
#include <string>
#include <stack>
#include <queue>
#include <iomanip>
#include <numeric>
#include <tuple>
#include <bitset>
#include <complex>
#include <unistd.h>
#include <cassert>
#include <cctype>
#include <random>
#include <time.h>
#define _USE_MATH_DEFINES
#define _GLIBCXX_DEBUG
using namespace std;
typedef long long ll;
typedef pair<int, int> pii;
typedef pair<ll, ll> plglg;
typedef pair<double, ll> pdlg;
typedef tuple<int, int, int> tiii;
typedef tuple<ll, ll, ll> tlglglg;
typedef tuple<double, double, double> tddd;
typedef complex<double> xy_t;
typedef vector<ll> vll;
typedef vector< vector<ll> > matrix;
typedef unsigned int uint;
typedef unsigned long long ull;
template <class T> using V = vector<T>;
template <class T> using VV = V<V<T>>;
template <class T> using VVV = V<VV<T>>;
#define REP(i, x, y) for(ll i = (ll)x; i < (ll)y; i++)
#define DREP(i, x, y, d) for(ll i = (ll)x; i < (ll)y; i += (ll)d)
#define PER(i, x, y) for(ll i = (ll)x; i > (ll)y; i--)
#define DPER(i, x, y, d) for(ll i = (ll)x; i > (ll)y; i -= (ll)d)
int dx[4] = {1, 0, -1, 0};
int dy[4] = {0, 1, 0, -1};
double pi = 3.141592653589793;
ll mod = 1000000007;
int intmax = 2147483647;
int intmin = -2147483648;
ll llmax = 9223372036854775807;
ll llmin = -9223372036854775807;
int iinf = intmax / 8;
ll inf = llmax / 8;
double eps = 1e-12;
void yesno(bool ok, string yes = "Yes", string no = "No") {
    if (ok) {
        cout << yes << endl;
    } else {
        cout << no << endl;
    }
}

//「オイラーのふるい」。pnには素数の数が、primesには順番に素数が、
//eulnumsにはその整数を割り切る最小の素数が入る。
//ある数からeulnumsを割っていくとその数の素因数分解が可能。
int pn = 0;
int primes[1600000];
int eulnums[1600000];

void eulerprime(int n) {
    fill(eulnums, eulnums + n + 1, 0);
    for (int i = 2; i <= n; i++) {
        if (eulnums[i] == 0) {
            eulnums[i] = i;
            primes[pn] = i;
            pn++;
        }

        for (int j = 0; i * primes[j] <= n; j++) {
            eulnums[i * primes[j]] = primes[j];
            if (i % primes[j] == 0) {
                break;
            }
        }
    }
}

int main() {
    cin.tie(0);
    ios::sync_with_stdio(false);
    ll N;
    cin >> N;
    // eulerprime(1000010);
    if (N == 2) {
        cout << 1 << endl;
        return 0;
    }
    ll ans = 2;
    REP(i, 2, 1000010) {
        if ((ll)i * i > N) {
            break;
        }
        if (N % i == 0) {
            ll div = N / i;
            ll num = N;
            while (num % i == 0) {
                num /= i;
            }
            if (num % i == 1) {
                ans++;
            }
            if (div != i) {
                num = N;
                while (num % div == 0) {
                    num /= div;
                }
                if (num % div == 1) {
                    ans++;
                }
            }
        }
    }
    N--;
    REP(i, 2, 1000010) {
        if (i * i > N) {
            break;
        }
        if (N % i == 0) {
            ll div = N / i;
            if (div != i) {
                ans += 2;
            } else {
                ans++;
            }
        }
    }
    cout << ans << endl;
}


Measured memory_bytes: 256