16660610166 has 16 divisors (see below), whose sum is σ = 33324480000. Its totient is φ = 5552993448.

The previous prime is 16660610143. The next prime is 16660610167. The reversal of 16660610166 is 66101606661.

It is a happy number.

It is a super-2 number, since 2×16660610166² (a number of 21 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16660610167) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 66666 + ... + 194333.

It is an arithmetic number, because the mean of its divisors is an integer number (2082780000).

Almost surely, 2^16660610166 is an apocalyptic number.

16660610166 is an abundant number, since it is smaller than the sum of its proper divisors (16663869834).

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

16660610166 is a wasteful number, since it uses less digits than its factorization.

16660610166 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 271643.

The product of its (nonzero) digits is 46656, while the sum is 39.

The spelling of 16660610166 in words is "sixteen billion, six hundred sixty million, six hundred ten thousand, one hundred sixty-six".