16560166506 has 16 divisors (see below), whose sum is σ = 35668051104. Its totient is φ = 5095435824.

The previous prime is 16560166499. The next prime is 16560166549. The reversal of 16560166506 is 60566106561.

It is a super-2 number, since 2×16560166506² (a number of 21 digits) contains 22 as substring.

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, 106154836 + ... + 106154991.

It is an arithmetic number, because the mean of its divisors is an integer number (2229253194).

Almost surely, 2^16560166506 is an apocalyptic number.

16560166506 is an abundant number, since it is smaller than the sum of its proper divisors (19107884598).

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

16560166506 is a wasteful number, since it uses less digits than its factorization.

16560166506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 212309845.

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

The spelling of 16560166506 in words is "sixteen billion, five hundred sixty million, one hundred sixty-six thousand, five hundred six".