4166666666633 has 2 divisors, whose sum is σ = 4166666666634. Its totient is φ = 4166666666632.

The previous prime is 4166666666629. The next prime is 4166666666641. The reversal of 4166666666633 is 3366666666614.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3914489949049 + 252176717584 = 1978507^2 + 502172^2 .

It is a cyclic number.

It is not a de Polignac number, because 4166666666633 - 2² = 4166666666629 is a prime.

It is a super-2 number, since 2×4166666666633² (a number of 26 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 4166666666633.

It is not a weakly prime, because it can be changed into another prime (4166666666033) 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, 2083333333316 + 2083333333317.

It is an arithmetic number, because the mean of its divisors is an integer number (2083333333317).

Almost surely, 2^{4166666666633} is an apocalyptic number.

It is an amenable number.

4166666666633 is a deficient number, since it is larger than the sum of its proper divisors (1).

4166666666633 is an equidigital number, since it uses as much as digits as its factorization.

4166666666633 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 362797056, while the sum is 65.

The spelling of 4166666666633 in words is "four trillion, one hundred sixty-six billion, six hundred sixty-six million, six hundred sixty-six thousand, six hundred thirty-three".