479428020878640 has 160 divisors (see below), whose sum is σ = 1511534683088640. Its totient is φ = 125670792619008.

The previous prime is 479428020878627. The next prime is 479428020878647. The reversal of 479428020878640 is 46878020824974.

It is not an unprimeable number, because it can be changed into a prime (479428020878647) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 181679694 + ... + 184299666.

It is an arithmetic number, because the mean of its divisors is an integer number (9447091769304).

Almost surely, 2^{479428020878640} is an apocalyptic number.

479428020878640 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 479428020878640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (755767341544320).

479428020878640 is an abundant number, since it is smaller than the sum of its proper divisors (1032106662210000).

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

479428020878640 is a wasteful number, since it uses less digits than its factorization.

479428020878640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2632971 (or 2632965 counting only the distinct ones).

The product of its (nonzero) digits is 346816512, while the sum is 69.

The spelling of 479428020878640 in words is "four hundred seventy-nine trillion, four hundred twenty-eight billion, twenty million, eight hundred seventy-eight thousand, six hundred forty".