216434563365215 has 24 divisors (see below), whose sum is σ = 281238873825888. Its totient is φ = 159827458776960.

The previous prime is 216434563365187. The next prime is 216434563365233. The reversal of 216434563365215 is 512563365434612.

It is not a de Polignac number, because 216434563365215 - 2¹⁸ = 216434563103071 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 128207270 + ... + 129884460.

It is an arithmetic number, because the mean of its divisors is an integer number (11718286409412).

Almost surely, 2^{216434563365215} is an apocalyptic number.

216434563365215 is a deficient number, since it is larger than the sum of its proper divisors (64804310460673).

216434563365215 is a wasteful number, since it uses less digits than its factorization.

216434563365215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1829939 (or 1829926 counting only the distinct ones).

The product of its digits is 46656000, while the sum is 56.

The spelling of 216434563365215 in words is "two hundred sixteen trillion, four hundred thirty-four billion, five hundred sixty-three million, three hundred sixty-five thousand, two hundred fifteen".