2331128954440 has 128 divisors (see below), whose sum is σ = 6165887857920. Its totient is φ = 781983820800.

The previous prime is 2331128954437. The next prime is 2331128954501. The reversal of 2331128954440 is 444598211332.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 9007245 + ... + 9262435.

It is an arithmetic number, because the mean of its divisors is an integer number (48170998890).

Almost surely, 2^{2331128954440} is an apocalyptic number.

2331128954440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2331128954440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3082943928960).

2331128954440 is an abundant number, since it is smaller than the sum of its proper divisors (3834758903480).

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

2331128954440 is a wasteful number, since it uses less digits than its factorization.

2331128954440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 256823 (or 256819 counting only the distinct ones).

The product of its (nonzero) digits is 829440, while the sum is 46.

The spelling of 2331128954440 in words is "two trillion, three hundred thirty-one billion, one hundred twenty-eight million, nine hundred fifty-four thousand, four hundred forty".