216266642435616 has 96 divisors (see below), whose sum is σ = 572917159584000. Its totient is φ = 71426396989440.

The previous prime is 216266642435603. The next prime is 216266642435621. The reversal of 216266642435616 is 616534246662612.

It is a tau number, because it is divible by the number of its divisors (96).

It is a self number, because there is not a number n which added to its sum of digits gives 216266642435616.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 916852860 + ... + 917088708.

It is an arithmetic number, because the mean of its divisors is an integer number (5967887079000).

Almost surely, 2^{216266642435616} is an apocalyptic number.

It is an amenable number.

216266642435616 is an abundant number, since it is smaller than the sum of its proper divisors (356650517148384).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

216266642435616 is a wasteful number, since it uses less digits than its factorization.

216266642435616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 323602 (or 323594 counting only the distinct ones).

The product of its digits is 89579520, while the sum is 60.

The spelling of 216266642435616 in words is "two hundred sixteen trillion, two hundred sixty-six billion, six hundred forty-two million, four hundred thirty-five thousand, six hundred sixteen".