30821905855504 has 45 divisors (see below), whose sum is σ = 60084402829311. Its totient is φ = 15316828592160.

The previous prime is 30821905855493. The next prime is 30821905855513. The reversal of 30821905855504 is 40555850912803.

The square root of 30821905855504 is 5551748.

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

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 3708563509 + ... + 3708571819.

Almost surely, 2^{30821905855504} is an apocalyptic number.

30821905855504 is the 5551748-th square number.

It is an amenable number.

30821905855504 is a deficient number, since it is larger than the sum of its proper divisors (29262496973807).

30821905855504 is an frugal number, since it uses more digits than its factorization.

30821905855504 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16964 (or 8480 counting only the distinct ones).

The product of its (nonzero) digits is 8640000, while the sum is 55.

The spelling of 30821905855504 in words is "thirty trillion, eight hundred twenty-one billion, nine hundred five million, eight hundred fifty-five thousand, five hundred four".