2665443312 has 240 divisors, whose sum is σ = 8807864832. Its totient is φ = 736750080.

The previous prime is 2665443301. The next prime is 2665443349. The reversal of 2665443312 is 2133445662.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 4119373 + ... + 4120019.

Almost surely, 2^2665443312 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 2665443312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4403932416).

2665443312 is an abundant number, since it is smaller than the sum of its proper divisors (6142421520).

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

2665443312 is a wasteful number, since it uses less digits than its factorization.

2665443312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 796 (or 787 counting only the distinct ones).

The product of its digits is 103680, while the sum is 36.

The square root of 2665443312 is about 51627.9315099879. The cubic root of 2665443312 is about 1386.5104595778.

Adding to 2665443312 its reverse (2133445662), we get a palindrome (4798888974).

The spelling of 2665443312 in words is "two billion, six hundred sixty-five million, four hundred forty-three thousand, three hundred twelve".