43073658609 has 16 divisors (see below), whose sum is σ = 58306930752. Its totient is φ = 28278347328.

The previous prime is 43073658491. The next prime is 43073658623. The reversal of 43073658609 is 90685637034.

It is not a de Polignac number, because 43073658609 - 2²⁰ = 43072610033 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (43073658109) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 646207 + ... + 709739.

It is an arithmetic number, because the mean of its divisors is an integer number (3644183172).

Almost surely, 2^43073658609 is an apocalyptic number.

It is an amenable number.

43073658609 is a deficient number, since it is larger than the sum of its proper divisors (15233272143).

43073658609 is a wasteful number, since it uses less digits than its factorization.

43073658609 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66976.

The product of its (nonzero) digits is 3265920, while the sum is 51.

The spelling of 43073658609 in words is "forty-three billion, seventy-three million, six hundred fifty-eight thousand, six hundred nine".