43557081208 has 8 divisors (see below), whose sum is σ = 81669527280. Its totient is φ = 21778540600.

The previous prime is 43557081187. The next prime is 43557081209. The reversal of 43557081208 is 80218075534.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43557081209) by changing a digit.

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 as a sum of consecutive naturals, namely, 2722317568 + ... + 2722317583.

It is an arithmetic number, because the mean of its divisors is an integer number (10208690910).

Almost surely, 2^43557081208 is an apocalyptic number.

It is an amenable number.

43557081208 is a deficient number, since it is larger than the sum of its proper divisors (38112446072).

43557081208 is a wasteful number, since it uses less digits than its factorization.

43557081208 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5444635157 (or 5444635153 counting only the distinct ones).

The product of its (nonzero) digits is 268800, while the sum is 43.

The spelling of 43557081208 in words is "forty-three billion, five hundred fifty-seven million, eighty-one thousand, two hundred eight".