8720805897216 has 2112 divisors, whose sum is σ = 33398487797760. Its totient is φ = 2224187817984.

The previous prime is 8720805897191. The next prime is 8720805897217. The reversal of 8720805897216 is 6127985080278.

8720805897216 is a `hidden beast` number, since 8 + 7 + 20 + 8 + 0 + 589 + 7 + 21 + 6 = 666.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is not an unprimeable number, because it can be changed into a prime (8720805897217) by changing a digit.

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 191 ways as a sum of consecutive naturals, for example, 130161282015 + ... + 130161282081.

Almost surely, 2^{8720805897216} 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 8720805897216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16699243898880).

8720805897216 is an abundant number, since it is smaller than the sum of its proper divisors (24677681900544).

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

8720805897216 is an equidigital number, since it uses as much as digits as its factorization.

8720805897216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 176 (or 121 counting only the distinct ones).

The product of its (nonzero) digits is 27095040, while the sum is 63.

The spelling of 8720805897216 in words is "eight trillion, seven hundred twenty billion, eight hundred five million, eight hundred ninety-seven thousand, two hundred sixteen".