478664974188 has 36 divisors (see below), whose sum is σ = 1239469876008. Its totient is φ = 155663405760.

The previous prime is 478664974187. The next prime is 478664974217. The reversal of 478664974188 is 881479466874.

478664974188 is a `hidden beast` number, since 4 + 78 + 66 + 497 + 4 + 1 + 8 + 8 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is not an unprimeable number, because it can be changed into a prime (478664974187) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 162147906 + ... + 162150857.

It is an arithmetic number, because the mean of its divisors is an integer number (34429718778).

Almost surely, 2^478664974188 is an apocalyptic number.

It is an amenable number.

478664974188 is an abundant number, since it is smaller than the sum of its proper divisors (760804901820).

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

478664974188 is a wasteful number, since it uses less digits than its factorization.

478664974188 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 324298814 (or 324298809 counting only the distinct ones).

The product of its digits is 520224768, while the sum is 72.

The spelling of 478664974188 in words is "four hundred seventy-eight billion, six hundred sixty-four million, nine hundred seventy-four thousand, one hundred eighty-eight".