43705143409 has 4 divisors (see below), whose sum is σ = 43711500016. Its totient is φ = 43698786804.

The previous prime is 43705143401. The next prime is 43705143491. The reversal of 43705143409 is 90434150734.

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 43705143409 - 2³ = 43705143401 is a prime.

It is a super-2 number, since 2×43705143409² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (43705143401) 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, 3167979 + ... + 3181744.

It is an arithmetic number, because the mean of its divisors is an integer number (10927875004).

Almost surely, 2^43705143409 is an apocalyptic number.

It is an amenable number.

43705143409 is a deficient number, since it is larger than the sum of its proper divisors (6356607).

43705143409 is an equidigital number, since it uses as much as digits as its factorization.

43705143409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6356606.

The product of its (nonzero) digits is 181440, while the sum is 40.

The spelling of 43705143409 in words is "forty-three billion, seven hundred five million, one hundred forty-three thousand, four hundred nine".