216134643 has 8 divisors (see below), whose sum is σ = 288258256. Its totient is φ = 144050400.

The previous prime is 216134629. The next prime is 216134663. The reversal of 216134643 is 346431612.

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

It is not a de Polignac number, because 216134643 - 2¹² = 216130547 is a prime.

It is a Duffinian number.

It is a zygodrome in base 2.

It is a self number, because there is not a number n which added to its sum of digits gives 216134643.

It is not an unprimeable number, because it can be changed into a prime (216134663) 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, 7173 + ... + 21993.

It is an arithmetic number, because the mean of its divisors is an integer number (36032282).

Almost surely, 2^216134643 is an apocalyptic number.

216134643 is a deficient number, since it is larger than the sum of its proper divisors (72123613).

216134643 is a wasteful number, since it uses less digits than its factorization.

216134643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19685.

The product of its digits is 10368, while the sum is 30.

The square root of 216134643 is about 14701.5183909690. The cubic root of 216134643 is about 600.1246435493.

The spelling of 216134643 in words is "two hundred sixteen million, one hundred thirty-four thousand, six hundred forty-three".