216406540864039 has 8 divisors (see below), whose sum is σ = 216502470656640. Its totient is φ = 216310617987936.

The previous prime is 216406540863937. The next prime is 216406540864147. The reversal of 216406540864039 is 930468045604612.

216406540864039 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-216406540864039 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (216406540864439) 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, 61371562 + ... + 64801864.

It is an arithmetic number, because the mean of its divisors is an integer number (27062808832080).

Almost surely, 2^{216406540864039} is an apocalyptic number.

216406540864039 is a deficient number, since it is larger than the sum of its proper divisors (95929792601).

216406540864039 is a wasteful number, since it uses less digits than its factorization.

216406540864039 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3458249.

The product of its (nonzero) digits is 29859840, while the sum is 58.

The spelling of 216406540864039 in words is "two hundred sixteen trillion, four hundred six billion, five hundred forty million, eight hundred sixty-four thousand, thirty-nine".