6479729280 has 384 divisors, whose sum is σ = 23772528000. Its totient is φ = 1622827008.

The previous prime is 6479729273. The next prime is 6479729309. The reversal of 6479729280 is 829279746.

6479729280 is a `hidden beast` number, since 6 + 479 + 7 + 2 + 92 + 80 = 666.

It is a tau number, because it is divible by the number of its divisors (384).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 7815906 + ... + 7816734.

It is an arithmetic number, because the mean of its divisors is an integer number (61907625).

Almost surely, 2^6479729280 is an apocalyptic number.

6479729280 is a gapful number since it is divisible by the number (60) 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 6479729280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11886264000).

6479729280 is an abundant number, since it is smaller than the sum of its proper divisors (17292798720).

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

6479729280 is a wasteful number, since it uses less digits than its factorization.

6479729280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 936 (or 921 counting only the distinct ones).

The product of its (nonzero) digits is 3048192, while the sum is 54.

The square root of 6479729280 is about 80496.7656493104. The cubic root of 6479729280 is about 1864.3135405569.

The spelling of 6479729280 in words is "six billion, four hundred seventy-nine million, seven hundred twenty-nine thousand, two hundred eighty".