6816471977 has 24 divisors (see below), whose sum is σ = 8354102400. Its totient is φ = 5530273056.

The previous prime is 6816471967. The next prime is 6816471989. The reversal of 6816471977 is 7791746186.

6816471977 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 6816471977 - 2²⁰ = 6815423401 is a prime.

It is not an unprimeable number, because it can be changed into a prime (6816471967) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1350224 + ... + 1355262.

It is an arithmetic number, because the mean of its divisors is an integer number (348087600).

Almost surely, 2^6816471977 is an apocalyptic number.

It is an amenable number.

6816471977 is a deficient number, since it is larger than the sum of its proper divisors (1537630423).

6816471977 is a wasteful number, since it uses less digits than its factorization.

6816471977 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6525 (or 6518 counting only the distinct ones).

The product of its digits is 3556224, while the sum is 56.

The square root of 6816471977 is about 82561.9281327659. The cubic root of 6816471977 is about 1896.0649840381.

The spelling of 6816471977 in words is "six billion, eight hundred sixteen million, four hundred seventy-one thousand, nine hundred seventy-seven".