43708372109 has 4 divisors (see below), whose sum is σ = 43746347520. Its totient is φ = 43670396700.

The previous prime is 43708372091. The next prime is 43708372199. The reversal of 43708372109 is 90127380734.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-43708372109 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 43708372109.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43708372199) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18985979 + ... + 18988280.

It is an arithmetic number, because the mean of its divisors is an integer number (10936586880).

Almost surely, 2^43708372109 is an apocalyptic number.

It is an amenable number.

43708372109 is a deficient number, since it is larger than the sum of its proper divisors (37975411).

43708372109 is a wasteful number, since it uses less digits than its factorization.

43708372109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37975410.

The product of its (nonzero) digits is 254016, while the sum is 44.

The spelling of 43708372109 in words is "forty-three billion, seven hundred eight million, three hundred seventy-two thousand, one hundred nine".