6666641327420 has 24 divisors (see below), whose sum is σ = 14014364899248. Its totient is φ = 2663910224000.

The previous prime is 6666641327413. The next prime is 6666641327449. The reversal of 6666641327420 is 247231466666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 171624281 + ... + 171663120.

It is an arithmetic number, because the mean of its divisors is an integer number (583931870802).

Almost surely, 2^{6666641327420} is an apocalyptic number.

It is an amenable number.

6666641327420 is an abundant number, since it is smaller than the sum of its proper divisors (7347723571828).

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

6666641327420 is a wasteful number, since it uses less digits than its factorization.

6666641327420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 343288381 (or 343288379 counting only the distinct ones).

The product of its (nonzero) digits is 10450944, while the sum is 53.

The spelling of 6666641327420 in words is "six trillion, six hundred sixty-six billion, six hundred forty-one million, three hundred twenty-seven thousand, four hundred twenty".