8000722865784 has 128 divisors (see below), whose sum is σ = 22000001760000. Its totient is φ = 2404527820800.

The previous prime is 8000722865777. The next prime is 8000722865797. The reversal of 8000722865784 is 4875682270008.

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, 25768104 + ... + 26076744.

It is an arithmetic number, because the mean of its divisors is an integer number (171875013750).

Almost surely, 2^{8000722865784} 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 8000722865784, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11000000880000).

8000722865784 is an abundant number, since it is smaller than the sum of its proper divisors (13999278894216).

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

8000722865784 is a wasteful number, since it uses less digits than its factorization.

8000722865784 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 309469 (or 309465 counting only the distinct ones).

The product of its (nonzero) digits is 12042240, while the sum is 57.

The spelling of 8000722865784 in words is "eight trillion, seven hundred twenty-two million, eight hundred sixty-five thousand, seven hundred eighty-four".