478717643020 has 24 divisors (see below), whose sum is σ = 1013222859264. Its totient is φ = 189979284096.

The previous prime is 478717643017. The next prime is 478717643029. The reversal of 478717643020 is 20346717874.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (478717643029) 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, 94233217 + ... + 94238296.

It is an arithmetic number, because the mean of its divisors is an integer number (42217619136).

Almost surely, 2^478717643020 is an apocalyptic number.

It is an amenable number.

478717643020 is an abundant number, since it is smaller than the sum of its proper divisors (534505216244).

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

478717643020 is a wasteful number, since it uses less digits than its factorization.

478717643020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 188471649 (or 188471647 counting only the distinct ones).

The product of its (nonzero) digits is 1580544, while the sum is 49.

The spelling of 478717643020 in words is "four hundred seventy-eight billion, seven hundred seventeen million, six hundred forty-three thousand, twenty".