6668118885857 has 16 divisors (see below), whose sum is σ = 7833992386752. Its totient is φ = 5595539632320.

The previous prime is 6668118885809. The next prime is 6668118885863. The reversal of 6668118885857 is 7585888118666.

It is not a de Polignac number, because 6668118885857 - 2¹² = 6668118881761 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6668118885457) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 10248818 + ... + 10880004.

It is an arithmetic number, because the mean of its divisors is an integer number (489624524172).

Almost surely, 2^{6668118885857} is an apocalyptic number.

It is an amenable number.

6668118885857 is a deficient number, since it is larger than the sum of its proper divisors (1165873500895).

6668118885857 is a wasteful number, since it uses less digits than its factorization.

6668118885857 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 705088.

The product of its digits is 1238630400, while the sum is 77.

The spelling of 6668118885857 in words is "six trillion, six hundred sixty-eight billion, one hundred eighteen million, eight hundred eighty-five thousand, eight hundred fifty-seven".