478408988520 has 96 divisors (see below), whose sum is σ = 1555040073600. Its totient is φ = 127558429056.

The previous prime is 478408988513. The next prime is 478408988537. The reversal of 478408988520 is 25889804874.

478408988520 is a `hidden beast` number, since 47 + 8 + 408 + 98 + 85 + 20 = 666.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2686821 + ... + 2859339.

It is an arithmetic number, because the mean of its divisors is an integer number (16198334100).

Almost surely, 2^478408988520 is an apocalyptic number.

478408988520 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

478408988520 is an abundant number, since it is smaller than the sum of its proper divisors (1076631085080).

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

478408988520 is a wasteful number, since it uses less digits than its factorization.

478408988520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 180239 (or 180232 counting only the distinct ones).

The product of its (nonzero) digits is 41287680, while the sum is 63.

The spelling of 478408988520 in words is "four hundred seventy-eight billion, four hundred eight million, nine hundred eighty-eight thousand, five hundred twenty".