9017721522252 has 144 divisors (see below), whose sum is σ = 23579880184224. Its totient is φ = 2903843712000.

The previous prime is 9017721522191. The next prime is 9017721522263. The reversal of 9017721522252 is 2522251277109.

9017721522252 is a `hidden beast` number, since 9 + 0 + 1 + 7 + 72 + 1 + 522 + 2 + 52 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 9017721522198 and 9017721522207.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 376024102 + ... + 376048082.

It is an arithmetic number, because the mean of its divisors is an integer number (163749167946).

Almost surely, 2^{9017721522252} 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 9017721522252, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11789940092112).

9017721522252 is an abundant number, since it is smaller than the sum of its proper divisors (14562158661972).

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

9017721522252 is a wasteful number, since it uses less digits than its factorization.

9017721522252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26520 (or 26515 counting only the distinct ones).

The product of its (nonzero) digits is 352800, while the sum is 45.

The spelling of 9017721522252 in words is "nine trillion, seventeen billion, seven hundred twenty-one million, five hundred twenty-two thousand, two hundred fifty-two".