166666666560 has 112 divisors (see below), whose sum is σ = 535865222400. Its totient is φ = 43881836544.

The previous prime is 166666666559. The next prime is 166666666567. The reversal of 166666666560 is 65666666661.

It is a hoax number, since the sum of its digits (60) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (60).

It is a junction number, because it is equal to n+sod(n) for n = 166666666494 and 166666666503.

It is not an unprimeable number, because it can be changed into a prime (166666666567) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1022965 + ... + 1174644.

Almost surely, 2^166666666560 is an apocalyptic number.

166666666560 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

166666666560 is an abundant number, since it is smaller than the sum of its proper divisors (369198555840).

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

166666666560 is a wasteful number, since it uses less digits than its factorization.

166666666560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2197708 (or 2197698 counting only the distinct ones).

The product of its (nonzero) digits is 50388480, while the sum is 60.

The spelling of 166666666560 in words is "one hundred sixty-six billion, six hundred sixty-six million, six hundred sixty-six thousand, five hundred sixty".