43868615728 has 120 divisors (see below), whose sum is σ = 104829748800. Its totient is φ = 17682344064.

The previous prime is 43868615689. The next prime is 43868615761. The reversal of 43868615728 is 82751686834.

It is a happy number.

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 23 ways as a sum of consecutive naturals, for example, 2059951 + ... + 2081137.

It is an arithmetic number, because the mean of its divisors is an integer number (873581240).

Almost surely, 2^43868615728 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 43868615728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (52414874400).

43868615728 is an abundant number, since it is smaller than the sum of its proper divisors (60961133072).

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

43868615728 is a wasteful number, since it uses less digits than its factorization.

43868615728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21367 (or 21354 counting only the distinct ones).

The product of its digits is 15482880, while the sum is 58.

The spelling of 43868615728 in words is "forty-three billion, eight hundred sixty-eight million, six hundred fifteen thousand, seven hundred twenty-eight".