8720858128224 has 192 divisors, whose sum is σ = 25425548628480. Its totient is φ = 2595263569920.

The previous prime is 8720858128219. The next prime is 8720858128253. The reversal of 8720858128224 is 4228218580278.

It is a super-2 number, since 2×8720858128224² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 12671509 + ... + 13341995.

It is an arithmetic number, because the mean of its divisors is an integer number (132424732440).

Almost surely, 2^{8720858128224} 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 8720858128224, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12712774314240).

8720858128224 is an abundant number, since it is smaller than the sum of its proper divisors (16704690500256).

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

8720858128224 is a wasteful number, since it uses less digits than its factorization.

8720858128224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 670733 (or 670725 counting only the distinct ones).

The product of its (nonzero) digits is 9175040, while the sum is 57.

The spelling of 8720858128224 in words is "eight trillion, seven hundred twenty billion, eight hundred fifty-eight million, one hundred twenty-eight thousand, two hundred twenty-four".