6665188830 has 16 divisors (see below), whose sum is σ = 15996453264. Its totient is φ = 1777383680.

The previous prime is 6665188823. The next prime is 6665188909. The reversal of 6665188830 is 388815666.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 111086451 + ... + 111086510.

It is an arithmetic number, because the mean of its divisors is an integer number (999778329).

Almost surely, 2^6665188830 is an apocalyptic number.

6665188830 is an abundant number, since it is smaller than the sum of its proper divisors (9331264434).

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

6665188830 is a wasteful number, since it uses less digits than its factorization.

6665188830 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 222172971.

The product of its (nonzero) digits is 1658880, while the sum is 51.

The square root of 6665188830 is about 81640.6077267924. The cubic root of 6665188830 is about 1881.9329777299.

The spelling of 6665188830 in words is "six billion, six hundred sixty-five million, one hundred eighty-eight thousand, eight hundred thirty".