6479808256 has 72 divisors (see below), whose sum is σ = 13412891520. Its totient is φ = 3120574464.

The previous prime is 6479808221. The next prime is 6479808301. The reversal of 6479808256 is 6528089746.

It is a junction number, because it is equal to n+sod(n) for n = 6479808197 and 6479808206.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4134385 + ... + 4135951.

It is an arithmetic number, because the mean of its divisors is an integer number (186290160).

Almost surely, 2^6479808256 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 6479808256, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6706445760).

6479808256 is an abundant number, since it is smaller than the sum of its proper divisors (6933083264).

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

6479808256 is a wasteful number, since it uses less digits than its factorization.

6479808256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2169 (or 2155 counting only the distinct ones).

The product of its (nonzero) digits is 5806080, while the sum is 55.

The square root of 6479808256 is about 80497.2562016868. The cubic root of 6479808256 is about 1864.3211147122.

The spelling of 6479808256 in words is "six billion, four hundred seventy-nine million, eight hundred eight thousand, two hundred fifty-six".