216055825812 has 36 divisors (see below), whose sum is σ = 546156112320. Its totient is φ = 72016630992.

The previous prime is 216055825679. The next prime is 216055825819. The reversal of 216055825812 is 218528550612.

216055825812 is a `hidden beast` number, since 2 + 1 + 6 + 0 + 5 + 582 + 58 + 12 = 666.

216055825812 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (216055825819) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 1900389 + ... + 2010867.

It is an arithmetic number, because the mean of its divisors is an integer number (15171003120).

Almost surely, 2^216055825812 is an apocalyptic number.

It is an amenable number.

216055825812 is an abundant number, since it is smaller than the sum of its proper divisors (330100286508).

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

216055825812 is a wasteful number, since it uses less digits than its factorization.

216055825812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 164812 (or 164807 counting only the distinct ones).

The product of its (nonzero) digits is 384000, while the sum is 45.

The spelling of 216055825812 in words is "two hundred sixteen billion, fifty-five million, eight hundred twenty-five thousand, eight hundred twelve".