166516201606 has 8 divisors (see below), whose sum is σ = 249789894480. Its totient is φ = 83252903448.

The previous prime is 166516201591. The next prime is 166516201627. The reversal of 166516201606 is 606102615661.

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

It is a congruent number.

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, 2558506 + ... + 2622781.

It is an arithmetic number, because the mean of its divisors is an integer number (31223736810).

Almost surely, 2^166516201606 is an apocalyptic number.

166516201606 is a deficient number, since it is larger than the sum of its proper divisors (83273692874).

166516201606 is a wasteful number, since it uses less digits than its factorization.

166516201606 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5197358.

The product of its (nonzero) digits is 77760, while the sum is 40.

The spelling of 166516201606 in words is "one hundred sixty-six billion, five hundred sixteen million, two hundred one thousand, six hundred six".