6447716352 has 648 divisors, whose sum is σ = 24214472100. Its totient is φ = 1646346240.

The previous prime is 6447716323. The next prime is 6447716357. The reversal of 6447716352 is 2536177446.

6447716352 is a `hidden beast` number, since 6 + 4 + 4 + 7 + 7 + 1 + 635 + 2 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 6447716298 and 6447716307.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6447716357) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 53 ways as a sum of consecutive naturals, for example, 109283299 + ... + 109283357.

Almost surely, 2^6447716352 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 6447716352, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12107236050).

6447716352 is an abundant number, since it is smaller than the sum of its proper divisors (17766755748).

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

6447716352 is a wasteful number, since it uses less digits than its factorization.

6447716352 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 123 (or 82 counting only the distinct ones).

The product of its digits is 846720, while the sum is 45.

The square root of 6447716352 is about 80297.6733909520. The cubic root of 6447716352 is about 1861.2382736123.

The spelling of 6447716352 in words is "six billion, four hundred forty-seven million, seven hundred sixteen thousand, three hundred fifty-two".