55320025616220 has 48 divisors (see below), whose sum is σ = 154899155779200. Its totient is φ = 14751713111616.

The previous prime is 55320025616117. The next prime is 55320025616237. The reversal of 55320025616220 is 2261652002355.

55320025616220 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 6131770 + ... + 12175329.

It is an arithmetic number, because the mean of its divisors is an integer number (3227065745400).

Almost surely, 2^{55320025616220} is an apocalyptic number.

It is an amenable number.

55320025616220 is an abundant number, since it is smaller than the sum of its proper divisors (99579130162980).

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

55320025616220 is a wasteful number, since it uses less digits than its factorization.

55320025616220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18357474 (or 18357472 counting only the distinct ones).

The product of its (nonzero) digits is 216000, while the sum is 39.

Adding to 55320025616220 its reverse (2261652002355), we get a palindrome (57581677618575).

The spelling of 55320025616220 in words is "fifty-five trillion, three hundred twenty billion, twenty-five million, six hundred sixteen thousand, two hundred twenty".