8478668833 has 2 divisors, whose sum is σ = 8478668834. Its totient is φ = 8478668832.

The previous prime is 8478668683. The next prime is 8478668843. The reversal of 8478668833 is 3388668748.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5025108544 + 3453560289 = 70888^2 + 58767^2 .

It is a cyclic number.

It is not a de Polignac number, because 8478668833 - 2¹⁷ = 8478537761 is a prime.

It is a super-4 number, since 4×8478668833⁴ (a number of 41 digits) contains 4444 as substring.

It is not a weakly prime, because it can be changed into another prime (8478668843) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4239334416 + 4239334417.

It is an arithmetic number, because the mean of its divisors is an integer number (4239334417).

Almost surely, 2^8478668833 is an apocalyptic number.

It is an amenable number.

8478668833 is a deficient number, since it is larger than the sum of its proper divisors (1).

8478668833 is an equidigital number, since it uses as much as digits as its factorization.

8478668833 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 37158912, while the sum is 61.

The square root of 8478668833 is about 92079.6874071584. The cubic root of 8478668833 is about 2039.1189352557.

The spelling of 8478668833 in words is "eight billion, four hundred seventy-eight million, six hundred sixty-eight thousand, eight hundred thirty-three".