16611002066 has 8 divisors (see below), whose sum is σ = 24928986060. Its totient is φ = 8301340048.

The previous prime is 16611002047. The next prime is 16611002099. The reversal of 16611002066 is 66020011661.

It can be written as a sum of positive squares in 2 ways, for example, as 15632250841 + 978751225 = 125029^2 + 31285^2 .

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, 2075501 + ... + 2083488.

Almost surely, 2^16611002066 is an apocalyptic number.

16611002066 is a deficient number, since it is larger than the sum of its proper divisors (8317983994).

16611002066 is a wasteful number, since it uses less digits than its factorization.

16611002066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4160988.

The product of its (nonzero) digits is 2592, while the sum is 29.

The spelling of 16611002066 in words is "sixteen billion, six hundred eleven million, two thousand, sixty-six".