16521587082 has 288 divisors, whose sum is σ = 50007659520. Its totient is φ = 3832012800.

The previous prime is 16521587077. The next prime is 16521587083. The reversal of 16521587082 is 28078512561.

16521587082 is a `hidden beast` number, since 1 + 6 + 521 + 58 + 70 + 8 + 2 = 666.

16521587082 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (16521587083) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 6142794 + ... + 6145482.

Almost surely, 2^16521587082 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 16521587082, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25003829760).

16521587082 is an abundant number, since it is smaller than the sum of its proper divisors (33486072438).

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

16521587082 is a wasteful number, since it uses less digits than its factorization.

16521587082 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2770 (or 2756 counting only the distinct ones).

The product of its (nonzero) digits is 268800, while the sum is 45.

The spelling of 16521587082 in words is "sixteen billion, five hundred twenty-one million, five hundred eighty-seven thousand, eighty-two".