43449668328 has 192 divisors, whose sum is σ = 124009200000. Its totient is φ = 12666931200.

The previous prime is 43449668309. The next prime is 43449668359. The reversal of 43449668328 is 82386694434.

43449668328 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, 8689173 + ... + 8694171.

It is an arithmetic number, because the mean of its divisors is an integer number (645881250).

Almost surely, 2^43449668328 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 43449668328, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (62004600000).

43449668328 is an abundant number, since it is smaller than the sum of its proper divisors (80559531672).

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

43449668328 is a wasteful number, since it uses less digits than its factorization.

43449668328 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5144 (or 5129 counting only the distinct ones).

The product of its digits is 23887872, while the sum is 57.

The spelling of 43449668328 in words is "forty-three billion, four hundred forty-nine million, six hundred sixty-eight thousand, three hundred twenty-eight".