6328418721 has 8 divisors (see below), whose sum is σ = 8454027360. Its totient is φ = 4210877952.

The previous prime is 6328418693. The next prime is 6328418779. The reversal of 6328418721 is 1278148236.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-6328418721 is a prime.

It is a super-3 number, since 3×6328418721³ (a number of 30 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (6328418791) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 2015136 + ... + 2018273.

It is an arithmetic number, because the mean of its divisors is an integer number (1056753420).

Almost surely, 2^6328418721 is an apocalyptic number.

It is an amenable number.

6328418721 is a deficient number, since it is larger than the sum of its proper divisors (2125608639).

6328418721 is a wasteful number, since it uses less digits than its factorization.

6328418721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4033935.

The product of its digits is 129024, while the sum is 42.

The square root of 6328418721 is about 79551.3590141614. The cubic root of 6328418721 is about 1849.6876727185.

The spelling of 6328418721 in words is "six billion, three hundred twenty-eight million, four hundred eighteen thousand, seven hundred twenty-one".