6668118878041 has 2 divisors, whose sum is σ = 6668118878042. Its totient is φ = 6668118878040.

The previous prime is 6668118878017. The next prime is 6668118878063. The reversal of 6668118878041 is 1408788118666.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4575406560400 + 2092712317641 = 2139020^2 + 1446621^2 .

It is a cyclic number.

It is not a de Polignac number, because 6668118878041 - 2²⁵ = 6668085323609 is a prime.

It is not a weakly prime, because it can be changed into another prime (6668118878081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3334059439020 + 3334059439021.

It is an arithmetic number, because the mean of its divisors is an integer number (3334059439021).

Almost surely, 2^{6668118878041} is an apocalyptic number.

It is an amenable number.

6668118878041 is a deficient number, since it is larger than the sum of its proper divisors (1).

6668118878041 is an equidigital number, since it uses as much as digits as its factorization.

6668118878041 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 24772608, while the sum is 64.

The spelling of 6668118878041 in words is "six trillion, six hundred sixty-eight billion, one hundred eighteen million, eight hundred seventy-eight thousand, forty-one".