478644435628 has 12 divisors (see below), whose sum is σ = 874046360880. Its totient is φ = 228916903952.

The previous prime is 478644435623. The next prime is 478644435637. The reversal of 478644435628 is 826534446874.

It is not an unprimeable number, because it can be changed into a prime (478644435623) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2601328363 + ... + 2601328546.

It is an arithmetic number, because the mean of its divisors is an integer number (72837196740).

Almost surely, 2^478644435628 is an apocalyptic number.

It is an amenable number.

478644435628 is a deficient number, since it is larger than the sum of its proper divisors (395401925252).

478644435628 is a wasteful number, since it uses less digits than its factorization.

478644435628 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5202656936 (or 5202656934 counting only the distinct ones).

The product of its digits is 123863040, while the sum is 61.

The spelling of 478644435628 in words is "four hundred seventy-eight billion, six hundred forty-four million, four hundred thirty-five thousand, six hundred twenty-eight".