8721573008 has 20 divisors (see below), whose sum is σ = 17065358268. Its totient is φ = 4317609600.

The previous prime is 8721572941. The next prime is 8721573017. The reversal of 8721573008 is 8003751278.

It can be written as a sum of positive squares in 2 ways, for example, as 8572537744 + 149035264 = 92588^2 + 12208^2 .

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, 2696891 + ... + 2700122.

Almost surely, 2^8721573008 is an apocalyptic number.

It is an amenable number.

8721573008 is a deficient number, since it is larger than the sum of its proper divisors (8343785260).

8721573008 is a wasteful number, since it uses less digits than its factorization.

8721573008 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5397122 (or 5397116 counting only the distinct ones).

The product of its (nonzero) digits is 94080, while the sum is 41.

The square root of 8721573008 is about 93389.3623920840. The cubic root of 8721573008 is about 2058.4086909413.

The spelling of 8721573008 in words is "eight billion, seven hundred twenty-one million, five hundred seventy-three thousand, eight".