215355324013 has 4 divisors (see below), whose sum is σ = 215358732288. Its totient is φ = 215351915740.

The previous prime is 215355323977. The next prime is 215355324071. The reversal of 215355324013 is 310423553512.

215355324013 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 215355324013 - 2²¹ = 215353226861 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 215355324013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (215355324313) 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 3 ways as a sum of consecutive naturals, for example, 1607533 + ... + 1736338.

It is an arithmetic number, because the mean of its divisors is an integer number (53839683072).

Almost surely, 2^215355324013 is an apocalyptic number.

It is an amenable number.

215355324013 is a deficient number, since it is larger than the sum of its proper divisors (3408275).

215355324013 is an equidigital number, since it uses as much as digits as its factorization.

215355324013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3408274.

The product of its (nonzero) digits is 54000, while the sum is 34.

Adding to 215355324013 its reverse (310423553512), we get a palindrome (525778877525).

The spelling of 215355324013 in words is "two hundred fifteen billion, three hundred fifty-five million, three hundred twenty-four thousand, thirteen".