478636280008668 has 72 divisors (see below), whose sum is σ = 1217443469214336. Its totient is φ = 158551957159200.

The previous prime is 478636280008603. The next prime is 478636280008771. The reversal of 478636280008668 is 866800082636874.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 478636280008596 and 478636280008605.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 60872146 + ... + 68283897.

Almost surely, 2^{478636280008668} is an apocalyptic number.

It is an amenable number.

478636280008668 is an abundant number, since it is smaller than the sum of its proper divisors (738807189205668).

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

478636280008668 is a wasteful number, since it uses less digits than its factorization.

478636280008668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129156695 (or 129156690 counting only the distinct ones).

The product of its (nonzero) digits is 891813888, while the sum is 72.

The spelling of 478636280008668 in words is "four hundred seventy-eight trillion, six hundred thirty-six billion, two hundred eighty million, eight thousand, six hundred sixty-eight".