6819315616 has 12 divisors (see below), whose sum is σ = 13425527682. Its totient is φ = 3409657792.

The previous prime is 6819315589. The next prime is 6819315619. The reversal of 6819315616 is 6165139186.

It can be written as a sum of positive squares in only one way, i.e., 4623456016 + 2195859600 = 67996^2 + 46860^2 .

It is not an unprimeable number, because it can be changed into a prime (6819315619) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106551775 + ... + 106551838.

Almost surely, 2^6819315616 is an apocalyptic number.

It is an amenable number.

6819315616 is a deficient number, since it is larger than the sum of its proper divisors (6606212066).

6819315616 is a wasteful number, since it uses less digits than its factorization.

6819315616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 213103623 (or 213103615 counting only the distinct ones).

The product of its digits is 233280, while the sum is 46.

The square root of 6819315616 is about 82579.1475858161. The cubic root of 6819315616 is about 1896.3286089147.

The spelling of 6819315616 in words is "six billion, eight hundred nineteen million, three hundred fifteen thousand, six hundred sixteen".