5666640666176 has 28 divisors (see below), whose sum is σ = 12851131511808. Its totient is φ = 2428560285312.

The previous prime is 5666640666157. The next prime is 5666640666217. The reversal of 5666640666176 is 6716660466665.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (28).

It is a super-2 number, since 2×5666640666176² (a number of 26 digits) contains 22 as substring.

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, 6324375296 + ... + 6324376191.

Almost surely, 2^{5666640666176} is an apocalyptic number.

5666640666176 is a gapful number since it is divisible by the number (56) formed by its first and last digit.

It is an amenable number.

5666640666176 is an abundant number, since it is smaller than the sum of its proper divisors (7184490845632).

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

5666640666176 is a wasteful number, since it uses less digits than its factorization.

5666640666176 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12648751506 (or 12648751496 counting only the distinct ones).

The product of its (nonzero) digits is 235146240, while the sum is 65.

The spelling of 5666640666176 in words is "five trillion, six hundred sixty-six billion, six hundred forty million, six hundred sixty-six thousand, one hundred seventy-six".