43668143465 has 4 divisors (see below), whose sum is σ = 52401772164. Its totient is φ = 34934514768.

The previous prime is 43668143443. The next prime is 43668143471. The reversal of 43668143465 is 56434186634.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 8621308201 + 35046835264 = 92851^2 + 187208^2 .

It is a cyclic number.

It is not a de Polignac number, because 43668143465 - 2⁶ = 43668143401 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4366814342 + ... + 4366814351.

It is an arithmetic number, because the mean of its divisors is an integer number (13100443041).

Almost surely, 2^43668143465 is an apocalyptic number.

It is an amenable number.

43668143465 is a deficient number, since it is larger than the sum of its proper divisors (8733628699).

43668143465 is an equidigital number, since it uses as much as digits as its factorization.

43668143465 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8733628698.

The product of its digits is 4976640, while the sum is 50.

The spelling of 43668143465 in words is "forty-three billion, six hundred sixty-eight million, one hundred forty-three thousand, four hundred sixty-five".