43966799648 has 54 divisors (see below), whose sum is σ = 87664013073. Its totient is φ = 21706435200.

The previous prime is 43966799551. The next prime is 43966799683. The reversal of 43966799648 is 84699766934.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It can be written as a sum of positive squares in 2 ways, for example, as 30517294864 + 13449504784 = 174692^2 + 115972^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=148268.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 119800361 + ... + 119800727.

Almost surely, 2^43966799648 is an apocalyptic number.

It is an amenable number.

43966799648 is a deficient number, since it is larger than the sum of its proper divisors (43697213425).

43966799648 is an frugal number, since it uses more digits than its factorization.

43966799648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 946 (or 470 counting only the distinct ones).

The product of its digits is 423263232, while the sum is 71.

The spelling of 43966799648 in words is "forty-three billion, nine hundred sixty-six million, seven hundred ninety-nine thousand, six hundred forty-eight".