215512501353223 has 4 divisors (see below), whose sum is σ = 226855264582360. Its totient is φ = 204169738124088.

The previous prime is 215512501353209. The next prime is 215512501353263. The reversal of 215512501353223 is 322353105215512.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-215512501353223 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (215512501353263) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5671381614540 + ... + 5671381614577.

It is an arithmetic number, because the mean of its divisors is an integer number (56713816145590).

Almost surely, 2^{215512501353223} is an apocalyptic number.

215512501353223 is a deficient number, since it is larger than the sum of its proper divisors (11342763229137).

215512501353223 is a wasteful number, since it uses less digits than its factorization.

215512501353223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11342763229136.

The product of its (nonzero) digits is 270000, while the sum is 40.

Adding to 215512501353223 its reverse (322353105215512), we get a palindrome (537865606568735).

The spelling of 215512501353223 in words is "two hundred fifteen trillion, five hundred twelve billion, five hundred one million, three hundred fifty-three thousand, two hundred twenty-three".