8197522944 has 640 divisors, whose sum is σ = 27718225920. Its totient is φ = 2123366400.

The previous prime is 8197522939. The next prime is 8197522969. The reversal of 8197522944 is 4492257918.

It is a Harshad number since it is a multiple of its sum of digits (51).

Its product of digits (1451520) is a multiple of the sum of its prime divisors (126).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 199939564 + ... + 199939604.

It is an arithmetic number, because the mean of its divisors is an integer number (43309728).

Almost surely, 2^8197522944 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 8197522944, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13859112960).

8197522944 is an abundant number, since it is smaller than the sum of its proper divisors (19520702976).

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

8197522944 is a wasteful number, since it uses less digits than its factorization.

8197522944 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142 (or 126 counting only the distinct ones).

The product of its digits is 1451520, while the sum is 51.

The square root of 8197522944 is about 90540.1730945993. The cubic root of 8197522944 is about 2016.3266036740.

The spelling of 8197522944 in words is "eight billion, one hundred ninety-seven million, five hundred twenty-two thousand, nine hundred forty-four".