478717643028 has 72 divisors (see below), whose sum is σ = 1158578864352. Its totient is φ = 153840272768.

The previous prime is 478717643017. The next prime is 478717643029. The reversal of 478717643028 is 820346717874.

It is a congruent 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 23 ways as a sum of consecutive naturals, for example, 6797251 + ... + 6867317.

It is an arithmetic number, because the mean of its divisors is an integer number (16091373116).

Almost surely, 2^478717643028 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 478717643028, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (579289432176).

478717643028 is an abundant number, since it is smaller than the sum of its proper divisors (679861221324).

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

478717643028 is a wasteful number, since it uses less digits than its factorization.

478717643028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70809 (or 70778 counting only the distinct ones).

The product of its (nonzero) digits is 12644352, while the sum is 57.

The spelling of 478717643028 in words is "four hundred seventy-eight billion, seven hundred seventeen million, six hundred forty-three thousand, twenty-eight".