216259405264 has 40 divisors (see below), whose sum is σ = 481505792768. Its totient is φ = 92170535040.

The previous prime is 216259405231. The next prime is 216259405273. The reversal of 216259405264 is 462504952612.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5313672 + ... + 5354215.

Almost surely, 2^216259405264 is an apocalyptic number.

It is an amenable number.

216259405264 is an abundant number, since it is smaller than the sum of its proper divisors (265246387504).

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

216259405264 is a wasteful number, since it uses less digits than its factorization.

216259405264 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10668083 (or 10668077 counting only the distinct ones).

The product of its (nonzero) digits is 1036800, while the sum is 46.

The spelling of 216259405264 in words is "two hundred sixteen billion, two hundred fifty-nine million, four hundred five thousand, two hundred sixty-four".