216582261606163 has 4 divisors (see below), whose sum is σ = 216624620747128. Its totient is φ = 216539902465200.

The previous prime is 216582261606133. The next prime is 216582261606229. The reversal of 216582261606163 is 361606162285612.

It is a happy number.

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 216582261606163 - 2²⁹ = 216581724735251 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (216582261606133) 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, 21179562813 + ... + 21179573038.

It is an arithmetic number, because the mean of its divisors is an integer number (54156155186782).

Almost surely, 2^{216582261606163} is an apocalyptic number.

216582261606163 is a deficient number, since it is larger than the sum of its proper divisors (42359140965).

216582261606163 is an equidigital number, since it uses as much as digits as its factorization.

216582261606163 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42359140964.

The product of its (nonzero) digits is 7464960, while the sum is 55.

The spelling of 216582261606163 in words is "two hundred sixteen trillion, five hundred eighty-two billion, two hundred sixty-one million, six hundred six thousand, one hundred sixty-three".