43781416328 has 32 divisors (see below), whose sum is σ = 88609042200. Its totient is φ = 20160119808.

The previous prime is 43781416321. The next prime is 43781416333. The reversal of 43781416328 is 82361418734.

It can be written as a sum of positive squares in 4 ways, for example, as 29914469764 + 13866946564 = 172958^2 + 117758^2 .

It is a hoax number, since the sum of its digits (47) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (43781416321) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 441083 + ... + 531146.

Almost surely, 2^43781416328 is an apocalyptic number.

It is an amenable number.

43781416328 is an abundant number, since it is smaller than the sum of its proper divisors (44827625872).

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

43781416328 is a wasteful number, since it uses less digits than its factorization.

43781416328 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 972681 (or 972677 counting only the distinct ones).

The product of its digits is 774144, while the sum is 47.

The spelling of 43781416328 in words is "forty-three billion, seven hundred eighty-one million, four hundred sixteen thousand, three hundred twenty-eight".