528255521864 has 24 divisors (see below), whose sum is σ = 1152189978390. Its totient is φ = 226395223488.

The previous prime is 528255521863. The next prime is 528255521897. The reversal of 528255521864 is 468125552825.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 301719504100 + 226536017764 = 549290^2 + 475958^2 .

It is not an unprimeable number, because it can be changed into a prime (528255521863) 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 5 ways as a sum of consecutive naturals, for example, 673794917 + ... + 673795700.

Almost surely, 2^528255521864 is an apocalyptic number.

It is an amenable number.

528255521864 is an abundant number, since it is smaller than the sum of its proper divisors (623934456526).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

528255521864 is a wasteful number, since it uses less digits than its factorization.

528255521864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1347590637 (or 1347590626 counting only the distinct ones).

The product of its digits is 7680000, while the sum is 53.

The spelling of 528255521864 in words is "five hundred twenty-eight billion, two hundred fifty-five million, five hundred twenty-one thousand, eight hundred sixty-four".