4166666666641 has 2 divisors, whose sum is σ = 4166666666642. Its totient is φ = 4166666666640.

The previous prime is 4166666666633. The next prime is 4166666666707. The reversal of 4166666666641 is 1466666666614.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2826756239616 + 1339910427025 = 1681296^2 + 1157545^2 .

It is a cyclic number.

It is not a de Polignac number, because 4166666666641 - 2³ = 4166666666633 is a prime.

It is a super-2 number, since 2×4166666666641² (a number of 26 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (4166666663641) 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 as a sum of consecutive naturals, namely, 2083333333320 + 2083333333321.

It is an arithmetic number, because the mean of its divisors is an integer number (2083333333321).

Almost surely, 2^{4166666666641} is an apocalyptic number.

It is an amenable number.

4166666666641 is a deficient number, since it is larger than the sum of its proper divisors (1).

4166666666641 is an equidigital number, since it uses as much as digits as its factorization.

4166666666641 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 161243136, while the sum is 64.

The spelling of 4166666666641 in words is "four trillion, one hundred sixty-six billion, six hundred sixty-six million, six hundred sixty-six thousand, six hundred forty-one".