115573212216 has 576 divisors, whose sum is σ = 434225525760. Its totient is φ = 27336960000.

The previous prime is 115573212169. The next prime is 115573212229. The reversal of 115573212216 is 612212375511.

115573212216 is a `hidden beast` number, since 115 + 5 + 7 + 321 + 2 + 216 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 20448991 + ... + 20454641.

It is an arithmetic number, because the mean of its divisors is an integer number (753863760).

Almost surely, 2^115573212216 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 115573212216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (217112762880).

115573212216 is an abundant number, since it is smaller than the sum of its proper divisors (318652313544).

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

115573212216 is a wasteful number, since it uses less digits than its factorization.

115573212216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5736 (or 5722 counting only the distinct ones).

The product of its digits is 25200, while the sum is 36.

Adding to 115573212216 its reverse (612212375511), we get a palindrome (727785587727).

The spelling of 115573212216 in words is "one hundred fifteen billion, five hundred seventy-three million, two hundred twelve thousand, two hundred sixteen".