43942220816 has 80 divisors (see below), whose sum is σ = 98757637440. Its totient is φ = 18766702080.

The previous prime is 43942220813. The next prime is 43942220879. The reversal of 43942220816 is 61802224934.

It is not an unprimeable number, because it can be changed into a prime (43942220813) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 40646 + ... + 299226.

It is an arithmetic number, because the mean of its divisors is an integer number (1234470468).

Almost surely, 2^43942220816 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 43942220816, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (49378818720).

43942220816 is an abundant number, since it is smaller than the sum of its proper divisors (54815416624).

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

43942220816 is a wasteful number, since it uses less digits than its factorization.

43942220816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 258664 (or 258658 counting only the distinct ones).

The product of its (nonzero) digits is 165888, while the sum is 41.

The spelling of 43942220816 in words is "forty-three billion, nine hundred forty-two million, two hundred twenty thousand, eight hundred sixteen".