2823329864440 has 128 divisors (see below), whose sum is σ = 6755293080000. Its totient is φ = 1058304163840.

The previous prime is 2823329864437. The next prime is 2823329864449. The reversal of 2823329864440 is 444689233282.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2823329864449) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 286423992 + ... + 286433848.

Almost surely, 2^{2823329864440} is an apocalyptic number.

2823329864440 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 2823329864440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3377646540000).

2823329864440 is an abundant number, since it is smaller than the sum of its proper divisors (3931963215560).

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

2823329864440 is a wasteful number, since it uses less digits than its factorization.

2823329864440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11665 (or 11661 counting only the distinct ones).

The product of its (nonzero) digits is 15925248, while the sum is 55.

The spelling of 2823329864440 in words is "two trillion, eight hundred twenty-three billion, three hundred twenty-nine million, eight hundred sixty-four thousand, four hundred forty".