216142366 has 16 divisors (see below), whose sum is σ = 372303360. Its totient is φ = 93075480.

The previous prime is 216142361. The next prime is 216142379. The reversal of 216142366 is 663241612.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (216142361) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 258126 + ... + 258961.

It is an arithmetic number, because the mean of its divisors is an integer number (23268960).

Almost surely, 2^216142366 is an apocalyptic number.

216142366 is a deficient number, since it is larger than the sum of its proper divisors (156160994).

216142366 is a wasteful number, since it uses less digits than its factorization.

216142366 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 517119.

The product of its digits is 10368, while the sum is 31.

The square root of 216142366 is about 14701.7810485669. The cubic root of 216142366 is about 600.1317914200.

Adding to 216142366 its reverse (663241612), we get a palindrome (879383978).

The spelling of 216142366 in words is "two hundred sixteen million, one hundred forty-two thousand, three hundred sixty-six".