43318441209 has 4 divisors (see below), whose sum is σ = 57757921616. Its totient is φ = 28878960804.

The previous prime is 43318441207. The next prime is 43318441211. The reversal of 43318441209 is 90214481334.

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 an interprime number because it is at equal distance from previous prime (43318441207) and next prime (43318441211).

It is not a de Polignac number, because 43318441209 - 2¹ = 43318441207 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (43318441207) 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, 7219740199 + ... + 7219740204.

It is an arithmetic number, because the mean of its divisors is an integer number (14439480404).

Almost surely, 2^43318441209 is an apocalyptic number.

It is an amenable number.

43318441209 is a deficient number, since it is larger than the sum of its proper divisors (14439480407).

43318441209 is a wasteful number, since it uses less digits than its factorization.

43318441209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14439480406.

The product of its (nonzero) digits is 82944, while the sum is 39.

The spelling of 43318441209 in words is "forty-three billion, three hundred eighteen million, four hundred forty-one thousand, two hundred nine".