6921341568 has 128 divisors (see below), whose sum is σ = 20456712000. Its totient is φ = 2303824896.

The previous prime is 6921341503. The next prime is 6921341617. The reversal of 6921341568 is 8651431296.

6921341568 is a `hidden beast` number, since 69 + 21 + 3 + 4 + 1 + 568 = 666.

It is a tau number, because it is divible by the number of its divisors (128).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4274263 + ... + 4275881.

Almost surely, 2^6921341568 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 6921341568, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10228356000).

6921341568 is an abundant number, since it is smaller than the sum of its proper divisors (13535370432).

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

6921341568 is a wasteful number, since it uses less digits than its factorization.

6921341568 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2879 (or 2861 counting only the distinct ones).

The product of its digits is 311040, while the sum is 45.

The square root of 6921341568 is about 83194.6005940289. The cubic root of 6921341568 is about 1905.7390250644.

The spelling of 6921341568 in words is "six billion, nine hundred twenty-one million, three hundred forty-one thousand, five hundred sixty-eight".