6443950875 has 16 divisors (see below), whose sum is σ = 10722734880. Its totient is φ = 3436773600.

The previous prime is 6443950867. The next prime is 6443950949. The reversal of 6443950875 is 5780593446.

It is not a de Polignac number, because 6443950875 - 2³ = 6443950867 is a prime.

It is a hoax number, since the sum of its digits (51) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8591560 + ... + 8592309.

It is an arithmetic number, because the mean of its divisors is an integer number (670170930).

Almost surely, 2^6443950875 is an apocalyptic number.

6443950875 is a deficient number, since it is larger than the sum of its proper divisors (4278784005).

6443950875 is a wasteful number, since it uses less digits than its factorization.

6443950875 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17183887 (or 17183877 counting only the distinct ones).

The product of its (nonzero) digits is 3628800, while the sum is 51.

The square root of 6443950875 is about 80274.2229797337. Note that the first 3 decimals coincide. The cubic root of 6443950875 is about 1860.8758809818.

The spelling of 6443950875 in words is "six billion, four hundred forty-three million, nine hundred fifty thousand, eight hundred seventy-five".