43189568041 has 3 divisors (see below), whose sum is σ = 43189775863. Its totient is φ = 43189360220.

The previous prime is 43189568027. The next prime is 43189568101. The reversal of 43189568041 is 14086598134.

It is a happy number.

The square root of 43189568041 is 207821.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in only one way, i.e., 1956204441 + 41233363600 = 44229^2 + 203060^2 .

It is not a de Polignac number, because 43189568041 - 2⁹ = 43189567529 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (43189568441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 103911 + ... + 311731.

Almost surely, 2^43189568041 is an apocalyptic number.

43189568041 is the 207821-st square number.

43189568041 is the 103911-st centered octagonal number.

It is an amenable number.

43189568041 is a deficient number, since it is larger than the sum of its proper divisors (207822).

43189568041 is an frugal number, since it uses more digits than its factorization.

43189568041 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 415642 (or 207821 counting only the distinct ones).

The product of its (nonzero) digits is 829440, while the sum is 49.

Multiplying 43189568041 by its sum of digits (49), we get a square (2116288834009 = 1454747²).

The spelling of 43189568041 in words is "forty-three billion, one hundred eighty-nine million, five hundred sixty-eight thousand, forty-one".