108535536605521 has 3 divisors (see below), whose sum is σ = 108535547023561. Its totient is φ = 108535526187482.

The previous prime is 108535536605497. The next prime is 108535536605711. The reversal of 108535536605521 is 125506635535801.

The square root of 108535536605521 is 10418039.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is not a de Polignac number, because 108535536605521 - 2³³ = 108526946670929 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (108535536600521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 5209020 + ... + 15627058.

Almost surely, 2^{108535536605521} is an apocalyptic number.

108535536605521 is the 10418039-th square number.

108535536605521 is the 5209020-th centered octagonal number.

It is an amenable number.

108535536605521 is a deficient number, since it is larger than the sum of its proper divisors (10418040).

108535536605521 is an frugal number, since it uses more digits than its factorization.

108535536605521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20836078 (or 10418039 counting only the distinct ones).

The product of its (nonzero) digits is 16200000, while the sum is 55.

The spelling of 108535536605521 in words is "one hundred eight trillion, five hundred thirty-five billion, five hundred thirty-six million, six hundred five thousand, five hundred twenty-one".