33528905881 has 9 divisors (see below), whose sum is σ = 34020986773. Its totient is φ = 33043850140.

The previous prime is 33528905873. The next prime is 33528905899. The reversal of 33528905881 is 18850982533.

The square root of 33528905881 is 183109.

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

It is not a de Polignac number, because 33528905881 - 2³ = 33528905873 is a prime.

It is a super-3 number, since 3×33528905881³ (a number of 33 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (33528905281) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 12999450 + ... + 13002028.

Almost surely, 2^33528905881 is an apocalyptic number.

33528905881 is the 183109-th square number.

33528905881 is the 91555-th centered octagonal number.

It is an amenable number.

33528905881 is a deficient number, since it is larger than the sum of its proper divisors (492080892).

33528905881 is an frugal number, since it uses more digits than its factorization.

33528905881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5300 (or 2650 counting only the distinct ones).

The product of its (nonzero) digits is 2073600, while the sum is 52.

The spelling of 33528905881 in words is "thirty-three billion, five hundred twenty-eight million, nine hundred five thousand, eight hundred eighty-one".