6624201641666 has 64 divisors (see below), whose sum is σ = 12219815312640. Its totient is φ = 2628567521280.

The previous prime is 6624201641657. The next prime is 6624201641671. The reversal of 6624201641666 is 6661461024266.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6268421 + ... + 7248551.

It is an arithmetic number, because the mean of its divisors is an integer number (190934614260).

Almost surely, 2^{6624201641666} is an apocalyptic number.

6624201641666 is a deficient number, since it is larger than the sum of its proper divisors (5595613670974).

6624201641666 is a wasteful number, since it uses less digits than its factorization.

6624201641666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 980619.

The product of its (nonzero) digits is 2985984, while the sum is 50.

The spelling of 6624201641666 in words is "six trillion, six hundred twenty-four billion, two hundred one million, six hundred forty-one thousand, six hundred sixty-six".