43969646328 has 128 divisors (see below), whose sum is σ = 126468864000. Its totient is φ = 12646748160.

The previous prime is 43969646327. The next prime is 43969646341. The reversal of 43969646328 is 82364696934.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43969646327) 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, 148828 + ... + 331796.

It is an arithmetic number, because the mean of its divisors is an integer number (988038000).

Almost surely, 2^43969646328 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 43969646328, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (63234432000).

43969646328 is an abundant number, since it is smaller than the sum of its proper divisors (82499217672).

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

43969646328 is a wasteful number, since it uses less digits than its factorization.

43969646328 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 183045 (or 183041 counting only the distinct ones).

The product of its digits is 40310784, while the sum is 60.

The spelling of 43969646328 in words is "forty-three billion, nine hundred sixty-nine million, six hundred forty-six thousand, three hundred twenty-eight".