478717643017 has 2 divisors, whose sum is σ = 478717643018. Its totient is φ = 478717643016.

The previous prime is 478717642987. The next prime is 478717643029. The reversal of 478717643017 is 710346717874.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 399772940176 + 78944702841 = 632276^2 + 280971^2 .

It is a cyclic number.

It is not a de Polignac number, because 478717643017 - 2³⁵ = 444357904649 is a prime.

It is not a weakly prime, because it can be changed into another prime (478717643077) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 239358821508 + 239358821509.

It is an arithmetic number, because the mean of its divisors is an integer number (239358821509).

Almost surely, 2^478717643017 is an apocalyptic number.

It is an amenable number.

478717643017 is a deficient number, since it is larger than the sum of its proper divisors (1).

478717643017 is an equidigital number, since it uses as much as digits as its factorization.

478717643017 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5531904, while the sum is 55.

The spelling of 478717643017 in words is "four hundred seventy-eight billion, seven hundred seventeen million, six hundred forty-three thousand, seventeen".