216451334815 has 8 divisors (see below), whose sum is σ = 259839301680. Its totient is φ = 173095934592.

The previous prime is 216451334807. The next prime is 216451334819. The reversal of 216451334815 is 518433154612.

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

It is a cyclic number.

It is not a de Polignac number, because 216451334815 - 2³ = 216451334807 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (216451334819) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8127034 + ... + 8153623.

It is an arithmetic number, because the mean of its divisors is an integer number (32479912710).

Almost surely, 2^216451334815 is an apocalyptic number.

216451334815 is a deficient number, since it is larger than the sum of its proper divisors (43387966865).

216451334815 is a wasteful number, since it uses less digits than its factorization.

216451334815 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16283321.

The product of its digits is 345600, while the sum is 43.

The spelling of 216451334815 in words is "two hundred sixteen billion, four hundred fifty-one million, three hundred thirty-four thousand, eight hundred fifteen".