6666641141243 has 2 divisors, whose sum is σ = 6666641141244. Its totient is φ = 6666641141242.

The previous prime is 6666641141197. The next prime is 6666641141261. The reversal of 6666641141243 is 3421411466666.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 6666641141243 - 2¹⁶ = 6666641075707 is a prime.

It is a super-2 number, since 2×6666641141243² (a number of 26 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a junction number, because it is equal to n+sod(n) for n = 6666641141191 and 6666641141200.

It is not a weakly prime, because it can be changed into another prime (6666641141273) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3333320570621 + 3333320570622.

It is an arithmetic number, because the mean of its divisors is an integer number (3333320570622).

Almost surely, 2^{6666641141243} is an apocalyptic number.

6666641141243 is a deficient number, since it is larger than the sum of its proper divisors (1).

6666641141243 is an equidigital number, since it uses as much as digits as its factorization.

6666641141243 is an odious number, because the sum of its binary digits is odd.

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

The spelling of 6666641141243 in words is "six trillion, six hundred sixty-six billion, six hundred forty-one million, one hundred forty-one thousand, two hundred forty-three".