from collections import defaultdict

d = defaultdict(int)

x = input()
n = len(x)
assert 1 <= n <= 200000

for i in range(n):
    d[x[i]] += 1

mod = 10 ** 9 + 7

fact = [1]

for i in range(200005):
    fact.append(fact[i] * (i + 1) % mod)

inv = [0] * 200006
inv[200005] = pow(fact[200005], mod-2, mod)
for i in range(200004, -1, -1):
    inv[i] = inv[i + 1] * (i + 1) % mod

ans = fact[n]
for i in range(26):
    ans *= inv[d[chr(97 + i)]]
    ans %= mod

print(ans)