8165597303220 has 384 divisors, whose sum is σ = 27396453826560. Its totient is φ = 1777984266240.

The previous prime is 8165597303197. The next prime is 8165597303233. The reversal of 8165597303220 is 223037955618.

It is a super-3 number, since 3×8165597303220³ (a number of 40 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 346619682 + ... + 346643238.

It is an arithmetic number, because the mean of its divisors is an integer number (71344931840).

Almost surely, 2^{8165597303220} 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 8165597303220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13698226913280).

8165597303220 is an abundant number, since it is smaller than the sum of its proper divisors (19230856523340).

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

8165597303220 is a wasteful number, since it uses less digits than its factorization.

8165597303220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24023 (or 24021 counting only the distinct ones).

The product of its (nonzero) digits is 2721600, while the sum is 51.

The spelling of 8165597303220 in words is "eight trillion, one hundred sixty-five billion, five hundred ninety-seven million, three hundred three thousand, two hundred twenty".