43461217609 has 4 divisors (see below), whose sum is σ = 43461653760. Its totient is φ = 43460781460.

The previous prime is 43461217601. The next prime is 43461217627. The reversal of 43461217609 is 90671216434.

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, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 43461217609 - 2³ = 43461217601 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (43461217601) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13044 + ... + 295114.

It is an arithmetic number, because the mean of its divisors is an integer number (10865413440).

Almost surely, 2^43461217609 is an apocalyptic number.

It is an amenable number.

43461217609 is a deficient number, since it is larger than the sum of its proper divisors (436151).

43461217609 is a wasteful number, since it uses less digits than its factorization.

43461217609 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 436150.

The product of its (nonzero) digits is 217728, while the sum is 43.

The spelling of 43461217609 in words is "forty-three billion, four hundred sixty-one million, two hundred seventeen thousand, six hundred nine".