43985396544 has 56 divisors (see below), whose sum is σ = 116403363840. Its totient is φ = 14658607104.

The previous prime is 43985396527. The next prime is 43985396597. The reversal of 43985396544 is 44569358934.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 960472 + ... + 1005224.

Almost surely, 2^43985396544 is an apocalyptic number.

It is an amenable number.

43985396544 is an abundant number, since it is smaller than the sum of its proper divisors (72417967296).

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

43985396544 is a wasteful number, since it uses less digits than its factorization.

43985396544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49887 (or 49877 counting only the distinct ones).

The product of its digits is 55987200, while the sum is 60.

The spelling of 43985396544 in words is "forty-three billion, nine hundred eighty-five million, three hundred ninety-six thousand, five hundred forty-four".