8085644008 has 16 divisors (see below), whose sum is σ = 16326781380. Its totient is φ = 3731835648.

The previous prime is 8085643999. The next prime is 8085644011. The reversal of 8085644008 is 8004465808.

It can be written as a sum of positive squares in 2 ways, for example, as 8038556964 + 47087044 = 89658^2 + 6862^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38873185 + ... + 38873392.

Almost surely, 2^8085644008 is an apocalyptic number.

It is an amenable number.

8085644008 is an abundant number, since it is smaller than the sum of its proper divisors (8241137372).

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

8085644008 is a wasteful number, since it uses less digits than its factorization.

8085644008 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77746596 (or 77746592 counting only the distinct ones).

The product of its (nonzero) digits is 245760, while the sum is 43.

The square root of 8085644008 is about 89920.2091189739. The cubic root of 8085644008 is about 2007.1116826780. Note that the first 3 decimals are identical.

The spelling of 8085644008 in words is "eight billion, eighty-five million, six hundred forty-four thousand, eight".