2001232011328 has 112 divisors (see below), whose sum is σ = 4377057527808. Its totient is φ = 900279360000.

The previous prime is 2001232011307. The next prime is 2001232011329. The reversal of 2001232011328 is 8231102321002.

It is not an unprimeable number, because it can be changed into a prime (2001232011329) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 28773651 + ... + 28843117.

It is an arithmetic number, because the mean of its divisors is an integer number (39080870784).

Almost surely, 2^{2001232011328} 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 2001232011328, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2188528763904).

2001232011328 is an abundant number, since it is smaller than the sum of its proper divisors (2375825516480).

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

2001232011328 is a wasteful number, since it uses less digits than its factorization.

2001232011328 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69912 (or 69902 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 25.

The spelling of 2001232011328 in words is "two trillion, one billion, two hundred thirty-two million, eleven thousand, three hundred twenty-eight".