3243343042440 has 192 divisors, whose sum is σ = 10596030681600. Its totient is φ = 860369126400.

The previous prime is 3243343042421. The next prime is 3243343042567. The reversal of 3243343042440 is 442403433423.

3243343042440 is a `hidden beast` number, since 32 + 43 + 343 + 0 + 4 + 244 + 0 = 666.

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

It is a junction number, because it is equal to n+sod(n) for n = 3243343042395 and 3243343042404.

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, 173255401 + ... + 173274119.

It is an arithmetic number, because the mean of its divisors is an integer number (55187659800).

Almost surely, 2^{3243343042440} is an apocalyptic number.

3243343042440 is a gapful number since it is divisible by the number (30) 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 3243343042440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5298015340800).

3243343042440 is an abundant number, since it is smaller than the sum of its proper divisors (7352687639160).

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

3243343042440 is a wasteful number, since it uses less digits than its factorization.

3243343042440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21228 (or 21221 counting only the distinct ones).

The product of its (nonzero) digits is 331776, while the sum is 36.

Adding to 3243343042440 its reverse (442403433423), we get a palindrome (3685746475863).

The spelling of 3243343042440 in words is "three trillion, two hundred forty-three billion, three hundred forty-three million, forty-two thousand, four hundred forty".