532809981328 has 20 divisors (see below), whose sum is σ = 1032331396428. Its totient is φ = 266401879040.

The previous prime is 532809981293. The next prime is 532809981329. The reversal of 532809981328 is 823189908235.

It can be written as a sum of positive squares in 2 ways, for example, as 80322361744 + 452487619584 = 283412^2 + 672672^2 .

It is not an unprimeable number, because it can be changed into a prime (532809981329) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1905000 + ... + 2166712.

Almost surely, 2^532809981328 is an apocalyptic number.

It is an amenable number.

532809981328 is a deficient number, since it is larger than the sum of its proper divisors (499521415100).

532809981328 is a wasteful number, since it uses less digits than its factorization.

532809981328 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 388962 (or 388956 counting only the distinct ones).

The product of its (nonzero) digits is 7464960, while the sum is 58.

The spelling of 532809981328 in words is "five hundred thirty-two billion, eight hundred nine million, nine hundred eighty-one thousand, three hundred twenty-eight".