2321921568 has 96 divisors (see below), whose sum is σ = 6339719232. Its totient is φ = 743500800.

The previous prime is 2321921561. The next prime is 2321921579. The reversal of 2321921568 is 8651291232.

It is a tau number, because it is divible by the number of its divisors (96).

It is not an unprimeable number, because it can be changed into a prime (2321921561) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 247198 + ... + 256418.

It is an arithmetic number, because the mean of its divisors is an integer number (66038742).

Almost surely, 2^2321921568 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 2321921568, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3169859616).

2321921568 is an abundant number, since it is smaller than the sum of its proper divisors (4017797664).

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

2321921568 is a wasteful number, since it uses less digits than its factorization.

2321921568 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9338 (or 9330 counting only the distinct ones).

The product of its digits is 51840, while the sum is 39.

The square root of 2321921568 is about 48186.3213785821. The cubic root of 2321921568 is about 1324.1865790369.

The spelling of 2321921568 in words is "two billion, three hundred twenty-one million, nine hundred twenty-one thousand, five hundred sixty-eight".