85807543523528 has 16 divisors (see below), whose sum is σ = 164813269573260. Its totient is φ = 41857338304000.

The previous prime is 85807543523491. The next prime is 85807543523531. The reversal of 85807543523528 is 82532534570858.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 53059598776804 + 32747944746724 = 7284202^2 + 5722582^2 .

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 130804181873 + ... + 130804182528.

Almost surely, 2^{85807543523528} is an apocalyptic number.

It is an amenable number.

85807543523528 is a deficient number, since it is larger than the sum of its proper divisors (79005726049732).

85807543523528 is a wasteful number, since it uses less digits than its factorization.

85807543523528 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 261608364448 (or 261608364444 counting only the distinct ones).

The product of its (nonzero) digits is 322560000, while the sum is 65.

The spelling of 85807543523528 in words is "eighty-five trillion, eight hundred seven billion, five hundred forty-three million, five hundred twenty-three thousand, five hundred twenty-eight".