16605651066 has 16 divisors (see below), whose sum is σ = 33472809984. Its totient is φ = 5491632384.

The previous prime is 16605651059. The next prime is 16605651091. The reversal of 16605651066 is 66015650661.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10895335 + ... + 10896858.

It is an arithmetic number, because the mean of its divisors is an integer number (2092050624).

Almost surely, 2^16605651066 is an apocalyptic number.

16605651066 is an abundant number, since it is smaller than the sum of its proper divisors (16867158918).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

16605651066 is a wasteful number, since it uses less digits than its factorization.

16605651066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21792325.

The product of its (nonzero) digits is 194400, while the sum is 42.

The spelling of 16605651066 in words is "sixteen billion, six hundred five million, six hundred fifty-one thousand, sixty-six".