43581605445028 has 48 divisors (see below), whose sum is σ = 89548809449344. Its totient is φ = 18166967712000.

The previous prime is 43581605444999. The next prime is 43581605445029. The reversal of 43581605445028 is 82054450618534.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 43581605445028.

It is not an unprimeable number, because it can be changed into a prime (43581605445029) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3899826 + ... + 10117897.

Almost surely, 2^{43581605445028} is an apocalyptic number.

It is an amenable number.

43581605445028 is an abundant number, since it is smaller than the sum of its proper divisors (45967204004316).

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

43581605445028 is a wasteful number, since it uses less digits than its factorization.

43581605445028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14020772 (or 14020770 counting only the distinct ones).

The product of its (nonzero) digits is 18432000, while the sum is 55.

The spelling of 43581605445028 in words is "forty-three trillion, five hundred eighty-one billion, six hundred five million, four hundred forty-five thousand, twenty-eight".