43428912512 has 32 divisors (see below), whose sum is σ = 86532001920. Its totient is φ = 21711076864.

The previous prime is 43428912497. The next prime is 43428912523. The reversal of 43428912512 is 21521982434.

It is a tau number, because it is divible by the number of its divisors (32).

It is a self number, because there is not a number n which added to its sum of digits gives 43428912512.

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, 935678 + ... + 980994.

It is an arithmetic number, because the mean of its divisors is an integer number (2704125060).

Almost surely, 2^43428912512 is an apocalyptic number.

It is an amenable number.

43428912512 is a deficient number, since it is larger than the sum of its proper divisors (43103089408).

43428912512 is an equidigital number, since it uses as much as digits as its factorization.

43428912512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52818 (or 52806 counting only the distinct ones).

The product of its digits is 138240, while the sum is 41.

The spelling of 43428912512 in words is "forty-three billion, four hundred twenty-eight million, nine hundred twelve thousand, five hundred twelve".