8334166661 has 2 divisors, whose sum is σ = 8334166662. Its totient is φ = 8334166660.

The previous prime is 8334166609. The next prime is 8334166693. The reversal of 8334166661 is 1666614338.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8329300225 + 4866436 = 91265^2 + 2206^2 .

It is a cyclic number.

It is not a de Polignac number, because 8334166661 - 2⁶ = 8334166597 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8334166261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4167083330 + 4167083331.

It is an arithmetic number, because the mean of its divisors is an integer number (4167083331).

Almost surely, 2^8334166661 is an apocalyptic number.

It is an amenable number.

8334166661 is a deficient number, since it is larger than the sum of its proper divisors (1).

8334166661 is an equidigital number, since it uses as much as digits as its factorization.

8334166661 is an evil number, because the sum of its binary digits is even.

The product of its digits is 373248, while the sum is 44.

The square root of 8334166661 is about 91291.6571270343. The cubic root of 8334166661 is about 2027.4682425013.

The spelling of 8334166661 in words is "eight billion, three hundred thirty-four million, one hundred sixty-six thousand, six hundred sixty-one".