216322520765625 has 168 divisors, whose sum is σ = 400037111334432. Its totient is φ = 112582764000000.

The previous prime is 216322520765551. The next prime is 216322520765627. The reversal of 216322520765625 is 526567025223612.

It is a happy number.

216322520765625 is a `hidden beast` number, since 2 + 1 + 6 + 3 + 2 + 2 + 5 + 2 + 0 + 7 + 6 + 5 + 625 = 666.

It is not a de Polignac number, because 216322520765625 - 2¹¹ = 216322520763577 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (216322520765627) by changing a digit.

It is a polite number, since it can be written in 167 ways as a sum of consecutive naturals, for example, 6633405570 + ... + 6633438180.

Almost surely, 2^{216322520765625} is an apocalyptic number.

216322520765625 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

216322520765625 is a deficient number, since it is larger than the sum of its proper divisors (183714590568807).

216322520765625 is an equidigital number, since it uses as much as digits as its factorization.

216322520765625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33787 (or 33759 counting only the distinct ones).

The product of its (nonzero) digits is 18144000, while the sum is 54.

The spelling of 216322520765625 in words is "two hundred sixteen trillion, three hundred twenty-two billion, five hundred twenty million, seven hundred sixty-five thousand, six hundred twenty-five".