4066817917 has 2 divisors, whose sum is σ = 4066817918. Its totient is φ = 4066817916.

The previous prime is 4066817897. The next prime is 4066817939. The reversal of 4066817917 is 7197186604.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3781512036 + 285305881 = 61494^2 + 16891^2 .

It is a cyclic number.

It is not a de Polignac number, because 4066817917 - 2⁷ = 4066817789 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4066817947) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2033408958 + 2033408959.

It is an arithmetic number, because the mean of its divisors is an integer number (2033408959).

Almost surely, 2^4066817917 is an apocalyptic number.

It is an amenable number.

4066817917 is a deficient number, since it is larger than the sum of its proper divisors (1).

4066817917 is an equidigital number, since it uses as much as digits as its factorization.

4066817917 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 508032, while the sum is 49.

The square root of 4066817917 is about 63771.6074519061. The cubic root of 4066817917 is about 1596.1911899075.

It can be divided in two parts, 40668 and 17917, that added together give a palindrome (58585).

The spelling of 4066817917 in words is "four billion, sixty-six million, eight hundred seventeen thousand, nine hundred seventeen".