6663185841 has 32 divisors (see below), whose sum is σ = 9970047360. Its totient is φ = 3930038784.

The previous prime is 6663185839. The next prime is 6663185857. The reversal of 6663185841 is 1485813666.

It is not a de Polignac number, because 6663185841 - 2¹ = 6663185839 is a prime.

It is not an unprimeable number, because it can be changed into a prime (6663185831) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 133446 + ... + 176448.

It is an arithmetic number, because the mean of its divisors is an integer number (311563980).

Almost surely, 2^6663185841 is an apocalyptic number.

It is an amenable number.

6663185841 is a deficient number, since it is larger than the sum of its proper divisors (3306861519).

6663185841 is a wasteful number, since it uses less digits than its factorization.

6663185841 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43185.

The product of its digits is 829440, while the sum is 48.

The square root of 6663185841 is about 81628.3396927807. The cubic root of 6663185841 is about 1881.7444425006.

The spelling of 6663185841 in words is "six billion, six hundred sixty-three million, one hundred eighty-five thousand, eight hundred forty-one".