43445427609 has 4 divisors (see below), whose sum is σ = 57927236816. Its totient is φ = 28963618404.

The previous prime is 43445427577. The next prime is 43445427611. The reversal of 43445427609 is 90672454434.

43445427609 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, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 43445427609 - 2⁵ = 43445427577 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (43445427689) 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, 7240904599 + ... + 7240904604.

It is an arithmetic number, because the mean of its divisors is an integer number (14481809204).

Almost surely, 2^43445427609 is an apocalyptic number.

It is an amenable number.

43445427609 is a deficient number, since it is larger than the sum of its proper divisors (14481809207).

43445427609 is a wasteful number, since it uses less digits than its factorization.

43445427609 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14481809206.

The product of its (nonzero) digits is 2903040, while the sum is 48.

The spelling of 43445427609 in words is "forty-three billion, four hundred forty-five million, four hundred twenty-seven thousand, six hundred nine".