6442857792 has 84 divisors (see below), whose sum is σ = 21105485856. Its totient is φ = 1840815360.

The previous prime is 6442857787. The next prime is 6442857809. The reversal of 6442857792 is 2977582446.

6442857792 is a `hidden beast` number, since 6 + 44 + 28 + 577 + 9 + 2 = 666.

It is a tau number, because it is divible by the number of its divisors (84).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 794934 + ... + 802997.

It is an arithmetic number, because the mean of its divisors is an integer number (251255784).

Almost surely, 2^6442857792 is an apocalyptic number.

It is an amenable number.

6442857792 is an abundant number, since it is smaller than the sum of its proper divisors (14662628064).

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

6442857792 is a wasteful number, since it uses less digits than its factorization.

6442857792 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1597956 (or 1597943 counting only the distinct ones).

The product of its digits is 6773760, while the sum is 54.

The square root of 6442857792 is about 80267.4142600844. The cubic root of 6442857792 is about 1860.7706553288.

The spelling of 6442857792 in words is "six billion, four hundred forty-two million, eight hundred fifty-seven thousand, seven hundred ninety-two".