118018094

Appears in sequences

• Numbers n such that tau(n) = tau(n+1) and phi(n) = phi(n+1).at n=25A217773
• Numbers k such that phi(k) = phi(k+1) and simultaneously Product_{d|k} phi(d) = Product_{d|(k+1)} phi(d) where phi(x) = Euler totient function (A000010).at n=11A247174
• Numbers k such that Product_{d|k} phi(d) = Product_{d|(k+1)} phi(d) where phi(x) = Euler totient function (A000010).at n=12A248795