43538927505472 has 224 divisors, whose sum is σ = 110669319936000. Its totient is φ = 16908870375936.

The previous prime is 43538927505433. The next prime is 43538927505589. The reversal of 43538927505472 is 27450572983534.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (224).

It is a Harshad number since it is a multiple of its sum of digits (64).

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 31 ways as a sum of consecutive naturals, for example, 7323723 + ... + 11862325.

It is an arithmetic number, because the mean of its divisors is an integer number (494059464000).

Almost surely, 2^{43538927505472} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 43538927505472, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (55334659968000).

43538927505472 is an abundant number, since it is smaller than the sum of its proper divisors (67130392430528).

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

43538927505472 is a wasteful number, since it uses less digits than its factorization.

43538927505472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4538678 (or 4538654 counting only the distinct ones).

The product of its (nonzero) digits is 254016000, while the sum is 64.

The spelling of 43538927505472 in words is "forty-three trillion, five hundred thirty-eight billion, nine hundred twenty-seven million, five hundred five thousand, four hundred seventy-two".