8720771747328 has 120 divisors (see below), whose sum is σ = 25175916651600. Its totient is φ = 2906094772224.

The previous prime is 8720771747323. The next prime is 8720771747333. The reversal of 8720771747328 is 8237471770278.

8720771747328 is a `hidden beast` number, since 8 + 72 + 0 + 7 + 71 + 7 + 473 + 28 = 666.

It is an interprime number because it is at equal distance from previous prime (8720771747323) and next prime (8720771747333).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8720771747323) 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 11 ways as a sum of consecutive naturals, for example, 15993493 + ... + 16529771.

It is an arithmetic number, because the mean of its divisors is an integer number (209799305430).

Almost surely, 2^{8720771747328} 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 8720771747328, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12587958325800).

8720771747328 is an abundant number, since it is smaller than the sum of its proper divisors (16455144904272).

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

8720771747328 is a wasteful number, since it uses less digits than its factorization.

8720771747328 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 539832 (or 539813 counting only the distinct ones).

The product of its (nonzero) digits is 51631104, while the sum is 63.

The spelling of 8720771747328 in words is "eight trillion, seven hundred twenty billion, seven hundred seventy-one million, seven hundred forty-seven thousand, three hundred twenty-eight".