6443950876 has 24 divisors (see below), whose sum is σ = 12342185856. Its totient is φ = 2919521520.

The previous prime is 6443950867. The next prime is 6443950949. The reversal of 6443950876 is 6780593446.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 225016 + ... + 252031.

It is an arithmetic number, because the mean of its divisors is an integer number (514257744).

Almost surely, 2^6443950876 is an apocalyptic number.

It is an amenable number.

6443950876 is a deficient number, since it is larger than the sum of its proper divisors (5898234980).

6443950876 is a wasteful number, since it uses less digits than its factorization.

6443950876 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 477369 (or 477367 counting only the distinct ones).

The product of its (nonzero) digits is 4354560, while the sum is 52.

The square root of 6443950876 is about 80274.2229859623. Note that the first 3 decimals coincide. The cubic root of 6443950876 is about 1860.8758810780.

The spelling of 6443950876 in words is "six billion, four hundred forty-three million, nine hundred fifty thousand, eight hundred seventy-six".