216585872943 has 16 divisors (see below), whose sum is σ = 315168796800. Its totient is φ = 131207998880.

The previous prime is 216585872903. The next prime is 216585872957. The reversal of 216585872943 is 349278585612.

216585872943 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 216585872943 - 2²⁰ = 216584824367 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (216585872903) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 1325808 + ... + 1480181.

It is an arithmetic number, because the mean of its divisors is an integer number (19698049800).

Almost surely, 2^216585872943 is an apocalyptic number.

216585872943 is a deficient number, since it is larger than the sum of its proper divisors (98582923857).

216585872943 is a wasteful number, since it uses less digits than its factorization.

216585872943 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2808342.

The product of its digits is 29030400, while the sum is 60.

The spelling of 216585872943 in words is "two hundred sixteen billion, five hundred eighty-five million, eight hundred seventy-two thousand, nine hundred forty-three".