166666560560 has 40 divisors (see below), whose sum is σ = 407894480880. Its totient is φ = 63157853952.

The previous prime is 166666560481. The next prime is 166666560589. The reversal of 166666560560 is 65065666661.

It is a tau number, because it is divible by the number of its divisors (40).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 54823007 + ... + 54826046.

It is an arithmetic number, because the mean of its divisors is an integer number (10197362022).

Almost surely, 2^166666560560 is an apocalyptic number.

166666560560 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

166666560560 is an abundant number, since it is smaller than the sum of its proper divisors (241227920320).

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

166666560560 is a wasteful number, since it uses less digits than its factorization.

166666560560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109649085 (or 109649079 counting only the distinct ones).

The product of its (nonzero) digits is 6998400, while the sum is 53.

The spelling of 166666560560 in words is "one hundred sixty-six billion, six hundred sixty-six million, five hundred sixty thousand, five hundred sixty".