16560166512 has 20 divisors (see below), whose sum is σ = 42780430280. Its totient is φ = 5520055488.

The previous prime is 16560166499. The next prime is 16560166549. The reversal of 16560166512 is 21566106561.

It is a super-2 number, since 2×16560166512² (a number of 21 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (39) coincides with the sum of the digits of its distinct prime factors.

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, 172501687 + ... + 172501782.

It is an arithmetic number, because the mean of its divisors is an integer number (2139021514).

Almost surely, 2^16560166512 is an apocalyptic number.

16560166512 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

16560166512 is an abundant number, since it is smaller than the sum of its proper divisors (26220263768).

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

16560166512 is a wasteful number, since it uses less digits than its factorization.

16560166512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 345003480 (or 345003474 counting only the distinct ones).

The product of its (nonzero) digits is 64800, while the sum is 39.

The spelling of 16560166512 in words is "sixteen billion, five hundred sixty million, one hundred sixty-six thousand, five hundred twelve".