43665000852 has 144 divisors (see below), whose sum is σ = 113633275392. Its totient is φ = 12941880000.

The previous prime is 43665000851. The next prime is 43665000887. The reversal of 43665000852 is 25800056634.

It is a self number, because there is not a number n which added to its sum of digits gives 43665000852.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43665000851) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 140401777 + ... + 140402087.

It is an arithmetic number, because the mean of its divisors is an integer number (789119968).

Almost surely, 2^43665000852 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 43665000852, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (56816637696).

43665000852 is an abundant number, since it is smaller than the sum of its proper divisors (69968274540).

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

43665000852 is a wasteful number, since it uses less digits than its factorization.

43665000852 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 682 (or 609 counting only the distinct ones).

The product of its (nonzero) digits is 172800, while the sum is 39.

The spelling of 43665000852 in words is "forty-three billion, six hundred sixty-five million, eight hundred fifty-two", and thus it is an aban number.