216243756504 has 24 divisors (see below), whose sum is σ = 585660174060. Its totient is φ = 72081252144.

The previous prime is 216243756497. The next prime is 216243756529. The reversal of 216243756504 is 405657342612.

216243756504 is a `hidden beast` number, since 2 + 1 + 62 + 4 + 37 + 56 + 504 = 666.

216243756504 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (24).

It is a super-2 number, since 2×216243756504² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 216243756504.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1501692682 + ... + 1501692825.

Almost surely, 2^216243756504 is an apocalyptic number.

216243756504 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

216243756504 is an abundant number, since it is smaller than the sum of its proper divisors (369416417556).

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

216243756504 is a wasteful number, since it uses less digits than its factorization.

216243756504 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3003385519 (or 3003385512 counting only the distinct ones).

The product of its (nonzero) digits is 1209600, while the sum is 45.

The spelling of 216243756504 in words is "two hundred sixteen billion, two hundred forty-three million, seven hundred fifty-six thousand, five hundred four".