16581128482 has 8 divisors (see below), whose sum is σ = 24873565356. Its totient is φ = 8289940032.

The previous prime is 16581128453. The next prime is 16581128497. The reversal of 16581128482 is 28482118561.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 15875748001 + 705380481 = 125999^2 + 26559^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 278163 + ... + 332470.

Almost surely, 2^16581128482 is an apocalyptic number.

16581128482 is a deficient number, since it is larger than the sum of its proper divisors (8292436874).

16581128482 is a wasteful number, since it uses less digits than its factorization.

16581128482 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 624212.

The product of its digits is 245760, while the sum is 46.

The spelling of 16581128482 in words is "sixteen billion, five hundred eighty-one million, one hundred twenty-eight thousand, four hundred eighty-two".