216909922594248 has 256 divisors, whose sum is σ = 663230550528000. Its totient is φ = 65280821329152.

The previous prime is 216909922594247. The next prime is 216909922594307. The reversal of 216909922594248 is 842495229909612.

216909922594248 is a `hidden beast` number, since 2 + 1 + 6 + 9 + 0 + 9 + 9 + 2 + 2 + 594 + 24 + 8 = 666.

It is a super-4 number, since 4×216909922594248⁴ (a number of 58 digits) contains 4444 as substring.

It is a Harshad number since it is a multiple of its sum of digits (72).

It is not an unprimeable number, because it can be changed into a prime (216909922594241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 19166811 + ... + 28305237.

It is an arithmetic number, because the mean of its divisors is an integer number (2590744338000).

Almost surely, 2^{216909922594248} 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 216909922594248, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (331615275264000).

216909922594248 is an abundant number, since it is smaller than the sum of its proper divisors (446320627933752).

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

216909922594248 is a wasteful number, since it uses less digits than its factorization.

216909922594248 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9138641 (or 9138631 counting only the distinct ones).

The product of its (nonzero) digits is 403107840, while the sum is 72.

The spelling of 216909922594248 in words is "two hundred sixteen trillion, nine hundred nine billion, nine hundred twenty-two million, five hundred ninety-four thousand, two hundred forty-eight".