43724843109 has 12 divisors (see below), whose sum is σ = 63315613452. Its totient is φ = 29077200000.

The previous prime is 43724843101. The next prime is 43724843153. The reversal of 43724843109 is 90134842734.

It can be written as a sum of positive squares in 2 ways, for example, as 37873052100 + 5851791009 = 194610^2 + 76497^2 .

It is not a de Polignac number, because 43724843109 - 2³ = 43724843101 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43724843101) 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, 6054142 + ... + 6061359.

It is an arithmetic number, because the mean of its divisors is an integer number (5276301121).

Almost surely, 2^43724843109 is an apocalyptic number.

It is an amenable number.

43724843109 is a deficient number, since it is larger than the sum of its proper divisors (19590770343).

43724843109 is a wasteful number, since it uses less digits than its factorization.

43724843109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12115908 (or 12115905 counting only the distinct ones).

The product of its (nonzero) digits is 580608, while the sum is 45.

The spelling of 43724843109 in words is "forty-three billion, seven hundred twenty-four million, eight hundred forty-three thousand, one hundred nine".