216215043 has 16 divisors (see below), whose sum is σ = 317613312. Its totient is φ = 129740000.

The previous prime is 216214979. The next prime is 216215047. The reversal of 216215043 is 340512612.

It is a cyclic number.

It is not a de Polignac number, because 216215043 - 2⁶ = 216214979 is a prime.

It is not an unprimeable number, because it can be changed into a prime (216215047) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29103 + ... + 35768.

It is an arithmetic number, because the mean of its divisors is an integer number (19850832).

Almost surely, 2^216215043 is an apocalyptic number.

216215043 is a deficient number, since it is larger than the sum of its proper divisors (101398269).

216215043 is a wasteful number, since it uses less digits than its factorization.

216215043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64986.

The product of its (nonzero) digits is 1440, while the sum is 24.

The square root of 216215043 is about 14704.2525481576. The cubic root of 216215043 is about 600.1990478482.

Adding to 216215043 its reverse (340512612), we get a palindrome (556727655).

It can be divided in two parts, 2162 and 15043, that added together give a triangular number (17205 = T₁₈₅).

The spelling of 216215043 in words is "two hundred sixteen million, two hundred fifteen thousand, forty-three".