16616161066 has 8 divisors (see below), whose sum is σ = 24925263300. Its totient is φ = 8307739968.

The previous prime is 16616161043. The next prime is 16616161099. The reversal of 16616161066 is 66016161661.

It can be written as a sum of positive squares in 2 ways, for example, as 15321240841 + 1294920225 = 123779^2 + 35985^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 104161 + ... + 209956.

Almost surely, 2^16616161066 is an apocalyptic number.

16616161066 is a deficient number, since it is larger than the sum of its proper divisors (8309102234).

16616161066 is a wasteful number, since it uses less digits than its factorization.

16616161066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 340568.

The product of its (nonzero) digits is 46656, while the sum is 40.

The spelling of 16616161066 in words is "sixteen billion, six hundred sixteen million, one hundred sixty-one thousand, sixty-six".