478273218966 has 24 divisors (see below), whose sum is σ = 1044418162944. Its totient is φ = 158169095280.

The previous prime is 478273218959. The next prime is 478273218979. The reversal of 478273218966 is 669812372874.

478273218966 is a `hidden beast` number, since 478 + 2 + 7 + 3 + 21 + 89 + 66 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 104606905 + ... + 104611476.

It is an arithmetic number, because the mean of its divisors is an integer number (43517423456).

Almost surely, 2^478273218966 is an apocalyptic number.

478273218966 is an abundant number, since it is smaller than the sum of its proper divisors (566144943978).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

478273218966 is a wasteful number, since it uses less digits than its factorization.

478273218966 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 209218516 (or 209218513 counting only the distinct ones).

The product of its digits is 48771072, while the sum is 63.

The spelling of 478273218966 in words is "four hundred seventy-eight billion, two hundred seventy-three million, two hundred eighteen thousand, nine hundred sixty-six".