43728188128733 has 4 divisors (see below), whose sum is σ = 43735844970048. Its totient is φ = 43720531287420.

The previous prime is 43728188128697. The next prime is 43728188128783. The reversal of 43728188128733 is 33782188182734.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 43728188128733 - 2²⁴ = 43728171351517 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 43728188128733.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43728188128783) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3828412091 + ... + 3828423512.

It is an arithmetic number, because the mean of its divisors is an integer number (10933961242512).

Almost surely, 2^{43728188128733} is an apocalyptic number.

It is an amenable number.

43728188128733 is a deficient number, since it is larger than the sum of its proper divisors (7656841315).

43728188128733 is an equidigital number, since it uses as much as digits as its factorization.

43728188128733 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7656841314.

The product of its digits is 86704128, while the sum is 65.

The spelling of 43728188128733 in words is "forty-three trillion, seven hundred twenty-eight billion, one hundred eighty-eight million, one hundred twenty-eight thousand, seven hundred thirty-three".