216655104052543 has 8 divisors (see below), whose sum is σ = 234866052688736. Its totient is φ = 198664894188000.

The previous prime is 216655104052523. The next prime is 216655104052549. The reversal of 216655104052543 is 345250401556612.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 216655104052543 - 2⁵ = 216655104052511 is a prime.

It is a super-2 number, since 2×216655104052543² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (216655104052549) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 55184690868 + ... + 55184694793.

It is an arithmetic number, because the mean of its divisors is an integer number (29358256586092).

Almost surely, 2^{216655104052543} is an apocalyptic number.

216655104052543 is a deficient number, since it is larger than the sum of its proper divisors (18210948636193).

216655104052543 is a wasteful number, since it uses less digits than its factorization.

216655104052543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110369385825.

The product of its (nonzero) digits is 4320000, while the sum is 49.

The spelling of 216655104052543 in words is "two hundred sixteen trillion, six hundred fifty-five billion, one hundred four million, fifty-two thousand, five hundred forty-three".