6666676618320 has 120 divisors (see below), whose sum is σ = 22658668564896. Its totient is φ = 1756361374464.

The previous prime is 6666676618279. The next prime is 6666676618331. The reversal of 6666676618320 is 238166766666.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (120).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 55718994 + ... + 55838513.

Almost surely, 2^{6666676618320} is an apocalyptic number.

6666676618320 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

6666676618320 is an abundant number, since it is smaller than the sum of its proper divisors (15991991946576).

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

6666676618320 is a wasteful number, since it uses less digits than its factorization.

6666676618320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111557609 (or 111557600 counting only the distinct ones).

The product of its (nonzero) digits is 94058496, while the sum is 63.

The spelling of 6666676618320 in words is "six trillion, six hundred sixty-six billion, six hundred seventy-six million, six hundred eighteen thousand, three hundred twenty".