43091943504 has 20 divisors (see below), whose sum is σ = 111320854176. Its totient is φ = 14363981152.

The previous prime is 43091943473. The next prime is 43091943511. The reversal of 43091943504 is 40534919034.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 448874364 + ... + 448874459.

Almost surely, 2^43091943504 is an apocalyptic number.

It is an amenable number.

43091943504 is an abundant number, since it is smaller than the sum of its proper divisors (68228910672).

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

43091943504 is a wasteful number, since it uses less digits than its factorization.

43091943504 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 897748834 (or 897748828 counting only the distinct ones).

The product of its (nonzero) digits is 233280, while the sum is 42.

The spelling of 43091943504 in words is "forty-three billion, ninety-one million, nine hundred forty-three thousand, five hundred four".