6399481404288 has 384 divisors, whose sum is σ = 20839394620800. Its totient is φ = 1730130554880.

The previous prime is 6399481404271. The next prime is 6399481404299. The reversal of 6399481404288 is 8824041849936.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 313520803 + ... + 313541213.

It is an arithmetic number, because the mean of its divisors is an integer number (54269256825).

Almost surely, 2^{6399481404288} 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 6399481404288, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10419697310400).

6399481404288 is an abundant number, since it is smaller than the sum of its proper divisors (14439913216512).

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

6399481404288 is a wasteful number, since it uses less digits than its factorization.

6399481404288 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21338 (or 21319 counting only the distinct ones).

The product of its (nonzero) digits is 95551488, while the sum is 66.

The spelling of 6399481404288 in words is "six trillion, three hundred ninety-nine billion, four hundred eighty-one million, four hundred four thousand, two hundred eighty-eight".