6666666600672 has 144 divisors (see below), whose sum is σ = 21075268975488. Its totient is φ = 1985111608320.

The previous prime is 6666666600667. The next prime is 6666666600673. The reversal of 6666666600672 is 2760066666666.

It is a tau number, because it is divible by the number of its divisors (144).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6666666600673) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 28603723 + ... + 28835850.

It is an arithmetic number, because the mean of its divisors is an integer number (146356034552).

Almost surely, 2^{6666666600672} is an apocalyptic number.

6666666600672 is a gapful number since it is divisible by the number (62) formed by its first and last digit.

It is an amenable number.

6666666600672 is an abundant number, since it is smaller than the sum of its proper divisors (14408602374816).

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

6666666600672 is a wasteful number, since it uses less digits than its factorization.

6666666600672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57439633 (or 57439622 counting only the distinct ones).

The product of its (nonzero) digits is 141087744, while the sum is 63.

The spelling of 6666666600672 in words is "six trillion, six hundred sixty-six billion, six hundred sixty-six million, six hundred thousand, six hundred seventy-two".