43916221872 has 40 divisors (see below), whose sum is σ = 126055823280. Its totient is φ = 14638740480.

The previous prime is 43916221861. The next prime is 43916221903. The reversal of 43916221872 is 27812261934.

43916221872 is a `hidden beast` number, since 4 + 3 + 9 + 1 + 622 + 18 + 7 + 2 = 666.

43916221872 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 7 ways as a sum of consecutive naturals, for example, 50828529 + ... + 50829392.

It is an arithmetic number, because the mean of its divisors is an integer number (3151395582).

Almost surely, 2^43916221872 is an apocalyptic number.

It is an amenable number.

43916221872 is an abundant number, since it is smaller than the sum of its proper divisors (82139601408).

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

43916221872 is a wasteful number, since it uses less digits than its factorization.

43916221872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101657938 (or 101657926 counting only the distinct ones).

The product of its digits is 290304, while the sum is 45.

The spelling of 43916221872 in words is "forty-three billion, nine hundred sixteen million, two hundred twenty-one thousand, eight hundred seventy-two".