6816338497 has 16 divisors (see below), whose sum is σ = 7127792640. Its totient is φ = 6510873600.

The previous prime is 6816338467. The next prime is 6816338527. The reversal of 6816338497 is 7948336186.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (6816338467) and next prime (6816338527).

It is a cyclic number.

It is not a de Polignac number, because 6816338497 - 2²⁷ = 6682120769 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6816338467) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1854972 + ... + 1858642.

It is an arithmetic number, because the mean of its divisors is an integer number (445487040).

Almost surely, 2^6816338497 is an apocalyptic number.

It is an amenable number.

6816338497 is a deficient number, since it is larger than the sum of its proper divisors (311454143).

6816338497 is a wasteful number, since it uses less digits than its factorization.

6816338497 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4464.

The product of its digits is 5225472, while the sum is 55.

The square root of 6816338497 is about 82561.1197659043. The cubic root of 6816338497 is about 1896.0526077234.

The spelling of 6816338497 in words is "six billion, eight hundred sixteen million, three hundred thirty-eight thousand, four hundred ninety-seven".