30520223440256 has 64 divisors (see below), whose sum is σ = 66345355348560. Its totient is φ = 13869504921600.

The previous prime is 30520223440241. The next prime is 30520223440261. The reversal of 30520223440256 is 65204432202503.

It is a tau number, because it is divible by the number of its divisors (64).

It is a congruent 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 7 ways as a sum of consecutive naturals, for example, 3286496 + ... + 8475936.

Almost surely, 2^{30520223440256} is an apocalyptic number.

It is an amenable number.

30520223440256 is an abundant number, since it is smaller than the sum of its proper divisors (35825131908304).

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

30520223440256 is a wasteful number, since it uses less digits than its factorization.

30520223440256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5193643 (or 5193631 counting only the distinct ones).

The product of its (nonzero) digits is 345600, while the sum is 38.

Adding to 30520223440256 its reverse (65204432202503), we get a palindrome (95724655642759).

The spelling of 30520223440256 in words is "thirty trillion, five hundred twenty billion, two hundred twenty-three million, four hundred forty thousand, two hundred fifty-six".