6665566160 has 40 divisors (see below), whose sum is σ = 16906301856. Its totient is φ = 2423841920.

The previous prime is 6665566157. The next prime is 6665566183. The reversal of 6665566160 is 616655666.

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

It is a congruent number.

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, 3786374 + ... + 3788133.

Almost surely, 2^6665566160 is an apocalyptic number.

It is an amenable number.

6665566160 is an abundant number, since it is smaller than the sum of its proper divisors (10240735696).

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

6665566160 is a wasteful number, since it uses less digits than its factorization.

6665566160 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7574531 (or 7574525 counting only the distinct ones).

The product of its (nonzero) digits is 1166400, while the sum is 47.

The square root of 6665566160 is about 81642.9186151500. The cubic root of 6665566160 is about 1881.9684904207.

The spelling of 6665566160 in words is "six billion, six hundred sixty-five million, five hundred sixty-six thousand, one hundred sixty".