6666641141161 has 2 divisors, whose sum is σ = 6666641141162. Its totient is φ = 6666641141160.

The previous prime is 6666641141159. The next prime is 6666641141183. The reversal of 6666641141161 is 1611411466666.

6666641141161 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5207268419136 + 1459372722025 = 2281944^2 + 1208045^2 .

It is a cyclic number.

It is not a de Polignac number, because 6666641141161 - 2¹ = 6666641141159 is a prime.

Together with 6666641141159, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (6666641141261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3333320570580 + 3333320570581.

It is an arithmetic number, because the mean of its divisors is an integer number (3333320570581).

Almost surely, 2^{6666641141161} is an apocalyptic number.

It is an amenable number.

6666641141161 is a deficient number, since it is larger than the sum of its proper divisors (1).

6666641141161 is an equidigital number, since it uses as much as digits as its factorization.

6666641141161 is an evil number, because the sum of its binary digits is even.

The product of its digits is 746496, while the sum is 49.

The spelling of 6666641141161 in words is "six trillion, six hundred sixty-six billion, six hundred forty-one million, one hundred forty-one thousand, one hundred sixty-one".