478636686132 has 72 divisors (see below), whose sum is σ = 1256126322528. Its totient is φ = 141668345280.

The previous prime is 478636686119. The next prime is 478636686221. The reversal of 478636686132 is 231686636874.

It is a super-2 number, since 2×478636686132² (a number of 24 digits) contains 22 as substring.

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, 3770583 + ... + 3895454.

It is an arithmetic number, because the mean of its divisors is an integer number (17446198924).

Almost surely, 2^478636686132 is an apocalyptic number.

It is an amenable number.

478636686132 is an abundant number, since it is smaller than the sum of its proper divisors (777489636396).

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

478636686132 is a wasteful number, since it uses less digits than its factorization.

478636686132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7666109 (or 7666096 counting only the distinct ones).

The product of its digits is 41803776, while the sum is 60.

The spelling of 478636686132 in words is "four hundred seventy-eight billion, six hundred thirty-six million, six hundred eighty-six thousand, one hundred thirty-two".