23565528216 has 96 divisors (see below), whose sum is σ = 65646968400. Its totient is φ = 7631366400.

The previous prime is 23565528191. The next prime is 23565528229. The reversal of 23565528216 is 61282556532.

23565528216 is a `hidden beast` number, since 2 + 3 + 5 + 6 + 552 + 82 + 16 = 666.

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 23 ways as a sum of consecutive naturals, for example, 1861155 + ... + 1873773.

Almost surely, 2^23565528216 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 23565528216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32823484200).

23565528216 is an abundant number, since it is smaller than the sum of its proper divisors (42081440184).

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

23565528216 is a wasteful number, since it uses less digits than its factorization.

23565528216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13369 (or 13362 counting only the distinct ones).

The product of its digits is 864000, while the sum is 45.

The spelling of 23565528216 in words is "twenty-three billion, five hundred sixty-five million, five hundred twenty-eight thousand, two hundred sixteen".