//https://codeforces.com/contest/988/problem/A
//BROWNIE TK

#include <bits/stdc++.h>
using namespace std;

typedef long long int lli;
typedef unsigned long long int ulli;
typedef long double ldb;

#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/tree_policy.hpp>
using namespace __gnu_pbds;

#define pb push_back
#define popb pop_back()
#define pf push_front
#define popf pop_front()

#define si size()
#define be begin()
#define en end()
#define all(v) v.be, v.en

#define le length()
#define mp make_pair
#define mt make_tuple
#define acc(v) accumulate(all(v), 0)
#define F first
#define S second

#define pll pair<lli, lli>
#define pii pair<int, int>
#define pil pair<int, lli>

#define forz(i, n) for (int i = 0; i < n; i++)
#define fore(i, m, n) for (int i = m; i <= n; i++)
#define rforz(i, n) for (int i = n - 1; i >= 0; i--)
#define rfore(i, m, n) for (int i = n; i >= m; i--)

#define deci(n) fixed << setprecision(n)
#define high(n) __builtin_popcount(n)
#define highll(n) __builtin_popcountll(n)
#define parity(n) __builtin_parity(n)
#define ctz(n) __builtin_ctz(n)

#define bset(a, p) ((a) | (1ll << (p)))
#define bchk(a, p) ((a) & (1ll << (p)))
#define bxor(a, p) ((a) ^ (1ll << (p)));
#define brem(a, p) (bchk(a, p) ? (bxor(a, p)) : (a))
/*SOME BITMASK KNOWLEDGE
1)x & (x - 1):sets the last one bit of x to zero
power of two exactly when x & (x − 1) = 0.
2)x & -x:sets all the one bits to zero, except last one bit
3)x | (x - 1):inverts all the bits after the last one bit*/

#define lb lower_bound
#define ub upper_bound
#define er equal_range

#define findnot find_first_not_of

#define maxe *max_element
#define mine *min_element

#define mod2 1000000007
#define mod 998244353
#define gcd __gcd
#define kira ios::sync_with_stdio(0), cin.tie(0), cout.tie(0)

#define endl "\n"
#define p0(a) cout << a << " "
#define p1(a) cout << a << endl
#define p2(a, b) cout << a << " " << b << endl
#define p3(a, b, c) cout << a << " " << b << " " << c << endl
#define p4(a, b, c, d) cout << a << " " << b << " " << c << " " << d << endl

#define oset tree<int, null_type, less<int>, rb_tree_tag, tree_order_statistics_node_update>
#define osetlli tree<lli, null_type, less<lli>, rb_tree_tag, tree_order_statistics_node_update>
//member functions :
//1. order_of_key(k) : number of elements sbtriectly lesser than k
//2. find_by_order(k) : k-th element in the set
#define ofk order_of_key
#define fbo find_by_order

/*STD funcions*/
lli power(lli x, lli y, lli p)
{
    lli res = 1;
    x = x % p;
    while (y > 0)
    {
        if (y & 1)
            res = (res * x) % p;
        y = y >> 1;
        x = (x * x) % p;
    }
    return res;
}
lli modi(lli a, lli m) { return power(a, m - 2, m); }
lli factors(lli num)
{
    lli count = 0;
    lli pp = 1;
    while (num % 2 == 0)
    {
        count++;
        num /= 2;
    }
    pp *= (count + 1);
    for (lli i = 3; i <= sqrt(num); i += 2)
    {
        count = 0;
        while (num % i == 0)
        {
            count++;
            num /= i;
        }
        pp *= (count + 1);
    }
    if (num > 2)
    {
        pp *= 2;
    }
    return pp;
}
/*CODE BEGINS*/
int main()
{
    kira;
    lli n;
    cin >> n;
    lli ans = 0;
    lli m = n;
    for (lli i = 2; i <= sqrt(n); i++)
    {
        if (n % i == 0)
        {
            lli t=n;
            while (t % i == 0)
            {
                t /= i;
            }
            if ((t - 1) % i == 0)
                ans++;
            lli d = n / i;
            if (i == d)
                continue;
            t=n;
            while (t % d == 0)
            {
                t /= d;
            }
            if ((t - 1) % d == 0)
                ans++;
        }
    }
    cout << ans + factors(m - 1);
    return 0;
}

Measured memory_bytes: 384