9021528728668 has 12 divisors (see below), whose sum is σ = 15795775686600. Its totient is φ = 4508449961072.

The previous prime is 9021528728659. The next prime is 9021528728711. The reversal of 9021528728668 is 8668278251209.

It is a congruent number.

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, 578592046 + ... + 578607637.

It is an arithmetic number, because the mean of its divisors is an integer number (1316314640550).

Almost surely, 2^{9021528728668} is an apocalyptic number.

It is an amenable number.

9021528728668 is a deficient number, since it is larger than the sum of its proper divisors (6774246957932).

9021528728668 is a wasteful number, since it uses less digits than its factorization.

9021528728668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1157201636 (or 1157201634 counting only the distinct ones).

The product of its (nonzero) digits is 46448640, while the sum is 64.

The spelling of 9021528728668 in words is "nine trillion, twenty-one billion, five hundred twenty-eight million, seven hundred twenty-eight thousand, six hundred sixty-eight".