216949942143 has 24 divisors (see below), whose sum is σ = 343190751696. Its totient is φ = 130973184000.

The previous prime is 216949942141. The next prime is 216949942159. The reversal of 216949942143 is 341249949612.

216949942143 is a `hidden beast` number, since 2 + 1 + 6 + 9 + 499 + 4 + 2 + 143 = 666.

It is not a de Polignac number, because 216949942143 - 2¹ = 216949942141 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 216949942143.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (216949942141) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4238008 + ... + 4288893.

It is an arithmetic number, because the mean of its divisors is an integer number (14299614654).

Almost surely, 2^216949942143 is an apocalyptic number.

216949942143 is a deficient number, since it is larger than the sum of its proper divisors (126240809553).

216949942143 is a wasteful number, since it uses less digits than its factorization.

216949942143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8527175 (or 8527172 counting only the distinct ones).

The product of its digits is 3359232, while the sum is 54.

The spelling of 216949942143 in words is "two hundred sixteen billion, nine hundred forty-nine million, nine hundred forty-two thousand, one hundred forty-three".