478183307656 has 32 divisors (see below), whose sum is σ = 905198175000. Its totient is φ = 236806327296.

The previous prime is 478183307653. The next prime is 478183307669. The reversal of 478183307656 is 656703381874.

It can be written as a sum of positive squares in 4 ways, for example, as 382955519556 + 95227788100 = 618834^2 + 308590^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 478183307656.

It is not an unprimeable number, because it can be changed into a prime (478183307653) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 158721 + ... + 990736.

Almost surely, 2^478183307656 is an apocalyptic number.

It is an amenable number.

478183307656 is a deficient number, since it is larger than the sum of its proper divisors (427014867344).

478183307656 is a wasteful number, since it uses less digits than its factorization.

478183307656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1149961 (or 1149957 counting only the distinct ones).

The product of its (nonzero) digits is 20321280, while the sum is 58.

The spelling of 478183307656 in words is "four hundred seventy-eight billion, one hundred eighty-three million, three hundred seven thousand, six hundred fifty-six".