8004128660 has 24 divisors (see below), whose sum is σ = 18336731616. Its totient is φ = 2910592160.

The previous prime is 8004128659. The next prime is 8004128663. The reversal of 8004128660 is 668214008.

It is a self number, because there is not a number n which added to its sum of digits gives 8004128660.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8004128663) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18190982 + ... + 18191421.

It is an arithmetic number, because the mean of its divisors is an integer number (764030484).

Almost surely, 2^8004128660 is an apocalyptic number.

It is an amenable number.

8004128660 is an abundant number, since it is smaller than the sum of its proper divisors (10332602956).

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

8004128660 is a wasteful number, since it uses less digits than its factorization.

8004128660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36382423 (or 36382421 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 35.

The square root of 8004128660 is about 89465.7960340151. The cubic root of 8004128660 is about 2000.3439958300.

The spelling of 8004128660 in words is "eight billion, four million, one hundred twenty-eight thousand, six hundred sixty".