43751328816 has 80 divisors (see below), whose sum is σ = 121967193600. Its totient is φ = 13434435840.

The previous prime is 43751328811. The next prime is 43751328851. The reversal of 43751328816 is 61882315734.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is not an unprimeable number, because it can be changed into a prime (43751328811) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 234985 + ... + 377783.

It is an arithmetic number, because the mean of its divisors is an integer number (1524589920).

Almost surely, 2^43751328816 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 43751328816, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (60983596800).

43751328816 is an abundant number, since it is smaller than the sum of its proper divisors (78215864784).

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

43751328816 is a wasteful number, since it uses less digits than its factorization.

43751328816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 143314 (or 143308 counting only the distinct ones).

The product of its digits is 967680, while the sum is 48.

The spelling of 43751328816 in words is "forty-three billion, seven hundred fifty-one million, three hundred twenty-eight thousand, eight hundred sixteen".