9982521504 has 72 divisors (see below), whose sum is σ = 28398251700. Its totient is φ = 3326281728.

The previous prime is 9982521503. The next prime is 9982521517. The reversal of 9982521504 is 4051252899.

It is a happy number.

9982521504 is a `hidden beast` number, since 9 + 98 + 2 + 52 + 1 + 504 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 9576579600 + 405941904 = 97860^2 + 20148^2 .

It is a tau number, because it is divible by the number of its divisors (72).

It is a self number, because there is not a number n which added to its sum of digits gives 9982521504.

It is not an unprimeable number, because it can be changed into a prime (9982521503) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1123672 + ... + 1132520.

Almost surely, 2^9982521504 is an apocalyptic number.

It is an amenable number.

9982521504 is an abundant number, since it is smaller than the sum of its proper divisors (18415730196).

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

9982521504 is a wasteful number, since it uses less digits than its factorization.

9982521504 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12782 (or 12771 counting only the distinct ones).

The product of its (nonzero) digits is 259200, while the sum is 45.

The square root of 9982521504 is about 99912.5692993629. The cubic root of 9982521504 is about 2153.1787487449.

The spelling of 9982521504 in words is "nine billion, nine hundred eighty-two million, five hundred twenty-one thousand, five hundred four".