def is_prime(n):# O(√N)
    if n == 1:
        return True
    for i in range(2, int(n**0.5) + 1):
        if n % i == 0:
            return False
    return True

s = input()
keta = len(s)-1
ans = 0

for i in range(2**keta):
    tmp = format(i,"0"+str(keta)+"b")
    num = int(s[0])
    val = 0
    for j in range(keta):
        if tmp[j] == "0":
            num *= 10
            num += int(s[j+1])
        else:
            val += num
            num = int(s[j+1])
    val += num
    if is_prime(val):
        ans += 1

print(ans)