43128682133 has 4 divisors (see below), whose sum is σ = 43573307820. Its totient is φ = 42684056448.

The previous prime is 43128682123. The next prime is 43128682153. The reversal of 43128682133 is 33128682134.

43128682133 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 31369014769 + 11759667364 = 177113^2 + 108442^2 .

It is a cyclic number.

It is not a de Polignac number, because 43128682133 - 2³⁴ = 25948812949 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43128682123) 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, 222312698 + ... + 222312891.

It is an arithmetic number, because the mean of its divisors is an integer number (10893326955).

Almost surely, 2^43128682133 is an apocalyptic number.

It is an amenable number.

43128682133 is a deficient number, since it is larger than the sum of its proper divisors (444625687).

43128682133 is an equidigital number, since it uses as much as digits as its factorization.

43128682133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 444625686.

The product of its digits is 165888, while the sum is 41.

Subtracting from 43128682133 its reverse (33128682134), we obtain a palindrome (9999999999).

The spelling of 43128682133 in words is "forty-three billion, one hundred twenty-eight million, six hundred eighty-two thousand, one hundred thirty-three".