8642081672 has 32 divisors (see below), whose sum is σ = 18550365120. Its totient is φ = 3697425600.

The previous prime is 8642081647. The next prime is 8642081683. The reversal of 8642081672 is 2761802468.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 98579 + ... + 164322.

It is an arithmetic number, because the mean of its divisors is an integer number (579698910).

Almost surely, 2^8642081672 is an apocalyptic number.

It is an amenable number.

8642081672 is an abundant number, since it is smaller than the sum of its proper divisors (9908283448).

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

8642081672 is a wasteful number, since it uses less digits than its factorization.

8642081672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 263501 (or 263497 counting only the distinct ones).

The product of its (nonzero) digits is 258048, while the sum is 44.

The square root of 8642081672 is about 92962.7972470708. The cubic root of 8642081672 is about 2052.1359194940.

The spelling of 8642081672 in words is "eight billion, six hundred forty-two million, eighty-one thousand, six hundred seventy-two".