215361011135 has 4 divisors (see below), whose sum is σ = 258433213368. Its totient is φ = 172288808904.

The previous prime is 215361011087. The next prime is 215361011143. The reversal of 215361011135 is 531110163512.

215361011135 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.

It is a cyclic number.

It is not a de Polignac number, because 215361011135 - 2¹² = 215361007039 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 215361011098 and 215361011107.

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 3 ways as a sum of consecutive naturals, for example, 21536101109 + ... + 21536101118.

It is an arithmetic number, because the mean of its divisors is an integer number (64608303342).

Almost surely, 2^215361011135 is an apocalyptic number.

215361011135 is a deficient number, since it is larger than the sum of its proper divisors (43072202233).

215361011135 is an equidigital number, since it uses as much as digits as its factorization.

215361011135 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43072202232.

The product of its (nonzero) digits is 2700, while the sum is 29.

Adding to 215361011135 its reverse (531110163512), we get a palindrome (746471174647).

The spelling of 215361011135 in words is "two hundred fifteen billion, three hundred sixty-one million, eleven thousand, one hundred thirty-five".