216141851 has 4 divisors (see below), whose sum is σ = 216171552. Its totient is φ = 216112152.

The previous prime is 216141847. The next prime is 216141857. The reversal of 216141851 is 158141612.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 216141851 - 2² = 216141847 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (216141857) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4286 + ... + 21228.

It is an arithmetic number, because the mean of its divisors is an integer number (54042888).

Almost surely, 2^216141851 is an apocalyptic number.

216141851 is a deficient number, since it is larger than the sum of its proper divisors (29701).

216141851 is a wasteful number, since it uses less digits than its factorization.

216141851 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29700.

The product of its digits is 1920, while the sum is 29.

The square root of 216141851 is about 14701.7635336717. The cubic root of 216141851 is about 600.1313147771.

The spelling of 216141851 in words is "two hundred sixteen million, one hundred forty-one thousand, eight hundred fifty-one".