43717843130809 has 9 divisors (see below), whose sum is σ = 44810416897711. Its totient is φ = 42651289796080.

The previous prime is 43717843130711. The next prime is 43717843130821. The reversal of 43717843130809 is 90803134871734.

It is a happy number.

The square root of 43717843130809 is 6611947.

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

43717843130809 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 2106570668409 + 41611272462400 = 1451403^2 + 6450680^2 .

It is not a de Polignac number, because 43717843130809 - 2¹⁷ = 43717842999737 is a prime.

It is a super-2 number, since 2×43717843130809² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (43717843130839) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 271009194 + ... + 271170460.

Almost surely, 2^{43717843130809} is an apocalyptic number.

43717843130809 is the 6611947-th square number.

43717843130809 is the 3305974-th centered octagonal number.

It is an amenable number.

43717843130809 is a deficient number, since it is larger than the sum of its proper divisors (1092573766902).

43717843130809 is an frugal number, since it uses more digits than its factorization.

43717843130809 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 322616 (or 161308 counting only the distinct ones).

The product of its (nonzero) digits is 12192768, while the sum is 58.

The spelling of 43717843130809 in words is "forty-three trillion, seven hundred seventeen billion, eight hundred forty-three million, one hundred thirty thousand, eight hundred nine".