6815456768 has 40 divisors (see below), whose sum is σ = 13632620760. Its totient is φ = 3403970560.

The previous prime is 6815456701. The next prime is 6815456797. The reversal of 6815456768 is 8676545186.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 490298 + ... + 504006.

It is an arithmetic number, because the mean of its divisors is an integer number (340815519).

Almost surely, 2^6815456768 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 6815456768, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6816310380).

6815456768 is an abundant number, since it is smaller than the sum of its proper divisors (6817163992).

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

6815456768 is an equidigital number, since it uses as much as digits as its factorization.

6815456768 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14698 (or 14682 counting only the distinct ones).

The product of its digits is 9676800, while the sum is 56.

The square root of 6815456768 is about 82555.7797370965. The cubic root of 6815456768 is about 1895.9708494275.

The spelling of 6815456768 in words is "six billion, eight hundred fifteen million, four hundred fifty-six thousand, seven hundred sixty-eight".