6816552166 has 4 divisors (see below), whose sum is σ = 10224828252. Its totient is φ = 3408276082.

The previous prime is 6816552161. The next prime is 6816552173. The reversal of 6816552166 is 6612556186.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 6612556186 = 2 ⋅3306278093.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6816552161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1704138040 + ... + 1704138043.

It is an arithmetic number, because the mean of its divisors is an integer number (2556207063).

Almost surely, 2^6816552166 is an apocalyptic number.

6816552166 is a deficient number, since it is larger than the sum of its proper divisors (3408276086).

6816552166 is a wasteful number, since it uses less digits than its factorization.

6816552166 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3408276085.

The product of its digits is 518400, while the sum is 46.

The square root of 6816552166 is about 82562.4137607422. The cubic root of 6816552166 is about 1896.0724191140.

The spelling of 6816552166 in words is "six billion, eight hundred sixteen million, five hundred fifty-two thousand, one hundred sixty-six".