6646159144 has 16 divisors (see below), whose sum is σ = 12462595200. Its totient is φ = 3322800432.

The previous prime is 6646159103. The next prime is 6646159171. The reversal of 6646159144 is 4419516466.

It is a junction number, because it is equal to n+sod(n) for n = 6646159094 and 6646159103.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 94537 + ... + 149095.

It is an arithmetic number, because the mean of its divisors is an integer number (778912200).

Almost surely, 2^6646159144 is an apocalyptic number.

It is an amenable number.

6646159144 is a deficient number, since it is larger than the sum of its proper divisors (5816436056).

6646159144 is a wasteful number, since it uses less digits than its factorization.

6646159144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69792 (or 69788 counting only the distinct ones).

The product of its digits is 622080, while the sum is 46.

The square root of 6646159144 is about 81523.9789509810. The cubic root of 6646159144 is about 1880.1402438007.

The spelling of 6646159144 in words is "six billion, six hundred forty-six million, one hundred fifty-nine thousand, one hundred forty-four".