215223205344 has 96 divisors (see below), whose sum is σ = 645772813056. Its totient is φ = 61482516480.

The previous prime is 215223205339. The next prime is 215223205357. The reversal of 215223205344 is 443502322512.

215223205344 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 (96).

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 15 ways as a sum of consecutive naturals, for example, 4881639 + ... + 4925529.

It is an arithmetic number, because the mean of its divisors is an integer number (6726800136).

Almost surely, 2^215223205344 is an apocalyptic number.

215223205344 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

215223205344 is an abundant number, since it is smaller than the sum of its proper divisors (430549607712).

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

215223205344 is a wasteful number, since it uses less digits than its factorization.

215223205344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51208 (or 51200 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 33.

Adding to 215223205344 its reverse (443502322512), we get a palindrome (658725527856).

The spelling of 215223205344 in words is "two hundred fifteen billion, two hundred twenty-three million, two hundred five thousand, three hundred forty-four".