478458477089 has 2 divisors, whose sum is σ = 478458477090. Its totient is φ = 478458477088.

The previous prime is 478458477053. The next prime is 478458477139. The reversal of 478458477089 is 980774854874.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 425668819489 + 52789657600 = 652433^2 + 229760^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-478458477089 is a prime.

It is not a weakly prime, because it can be changed into another prime (478458477589) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 239229238544 + 239229238545.

It is an arithmetic number, because the mean of its divisors is an integer number (239229238545).

Almost surely, 2^478458477089 is an apocalyptic number.

It is an amenable number.

478458477089 is a deficient number, since it is larger than the sum of its proper divisors (1).

478458477089 is an equidigital number, since it uses as much as digits as its factorization.

478458477089 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 505774080, while the sum is 71.

The spelling of 478458477089 in words is "four hundred seventy-eight billion, four hundred fifty-eight million, four hundred seventy-seven thousand, eighty-nine".