328855224681 has 27 divisors (see below), whose sum is σ = 496623546237. Its totient is φ = 209679548760.

The previous prime is 328855224679. The next prime is 328855224793. The reversal of 328855224681 is 186422558823.

The square root of 328855224681 is 573459.

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

328855224681 is a `hidden beast` number, since 3 + 2 + 8 + 8 + 552 + 2 + 4 + 6 + 81 = 666.

It is not a de Polignac number, because 328855224681 - 2¹ = 328855224679 is a prime.

It is a super-2 number, since 2×328855224681² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (328855224641) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 39564516 + ... + 39572826.

Almost surely, 2^328855224681 is an apocalyptic number.

328855224681 is the 573459-th square number.

328855224681 is the 286730-th centered octagonal number.

It is an amenable number.

328855224681 is a deficient number, since it is larger than the sum of its proper divisors (167768321556).

328855224681 is an frugal number, since it uses more digits than its factorization.

328855224681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16674 (or 8337 counting only the distinct ones).

The product of its digits is 7372800, while the sum is 54.

It can be divided in two parts, 328855 and 224681, that added together give a square (553536 = 744²).

The spelling of 328855224681 in words is "three hundred twenty-eight billion, eight hundred fifty-five million, two hundred twenty-four thousand, six hundred eighty-one".