216355502552323 has 4 divisors (see below), whose sum is σ = 216355700569320. Its totient is φ = 216355304535328.

The previous prime is 216355502552303. The next prime is 216355502552383. The reversal of 216355502552323 is 323255205553612.

216355502552323 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 a de Polignac number, because none of the positive numbers 2^k-216355502552323 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (216355502552303) 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, 97360438 + ... + 99557851.

It is an arithmetic number, because the mean of its divisors is an integer number (54088925142330).

Almost surely, 2^{216355502552323} is an apocalyptic number.

216355502552323 is a deficient number, since it is larger than the sum of its proper divisors (198016997).

216355502552323 is a wasteful number, since it uses less digits than its factorization.

216355502552323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 198016996.

The product of its (nonzero) digits is 8100000, while the sum is 49.

The spelling of 216355502552323 in words is "two hundred sixteen trillion, three hundred fifty-five billion, five hundred two million, five hundred fifty-two thousand, three hundred twenty-three".