43128171869 has 8 divisors (see below), whose sum is σ = 43172462400. Its totient is φ = 43083907776.

The previous prime is 43128171859. The next prime is 43128171887. The reversal of 43128171869 is 96817182134.

It is a happy number.

43128171869 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 43128171869 - 2²⁰ = 43127123293 is a prime.

It is a super-2 number, since 2×43128171869² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43128171829) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4953482 + ... + 4962180.

It is an arithmetic number, because the mean of its divisors is an integer number (5396557800).

Almost surely, 2^43128171869 is an apocalyptic number.

It is an amenable number.

43128171869 is a deficient number, since it is larger than the sum of its proper divisors (44290531).

43128171869 is a wasteful number, since it uses less digits than its factorization.

43128171869 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13219.

The product of its digits is 580608, while the sum is 50.

The spelling of 43128171869 in words is "forty-three billion, one hundred twenty-eight million, one hundred seventy-one thousand, eight hundred sixty-nine".