43589145609 has 12 divisors (see below), whose sum is σ = 63669539700. Its totient is φ = 28732919424.

The previous prime is 43589145581. The next prime is 43589145617. The reversal of 43589145609 is 90654198534.

43589145609 is a `hidden beast` number, since 4 + 3 + 589 + 1 + 4 + 56 + 0 + 9 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 21981027600 + 21608118009 = 148260^2 + 146997^2 .

It is not a de Polignac number, because 43589145609 - 2¹¹ = 43589143561 is a prime.

It is a super-2 number, since 2×43589145609² (a number of 22 digits) contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (43589145209) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 27208404 + ... + 27210005.

It is an arithmetic number, because the mean of its divisors is an integer number (5305794975).

Almost surely, 2^43589145609 is an apocalyptic number.

It is an amenable number.

43589145609 is a deficient number, since it is larger than the sum of its proper divisors (20080394091).

43589145609 is a wasteful number, since it uses less digits than its factorization.

43589145609 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54418504 (or 54418501 counting only the distinct ones).

The product of its (nonzero) digits is 4665600, while the sum is 54.

The spelling of 43589145609 in words is "forty-three billion, five hundred eighty-nine million, one hundred forty-five thousand, six hundred nine".