43473599616 has 128 divisors (see below), whose sum is σ = 116639170560. Its totient is φ = 14345856000.

The previous prime is 43473599593. The next prime is 43473599623. The reversal of 43473599616 is 61699537434.

It is a tau number, because it is divible by the number of its divisors (128).

It is a Smith number, since the sum of its digits (57) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 36624175 + ... + 36625361.

It is an arithmetic number, because the mean of its divisors is an integer number (911243520).

Almost surely, 2^43473599616 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 43473599616, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (58319585280).

43473599616 is an abundant number, since it is smaller than the sum of its proper divisors (73165570944).

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

43473599616 is a wasteful number, since it uses less digits than its factorization.

43473599616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2082 (or 2070 counting only the distinct ones).

The product of its digits is 14696640, while the sum is 57.

The spelling of 43473599616 in words is "forty-three billion, four hundred seventy-three million, five hundred ninety-nine thousand, six hundred sixteen".