43043642613 has 6 divisors (see below), whose sum is σ = 62174150454. Its totient is φ = 28695761736.

The previous prime is 43043642563. The next prime is 43043642623. The reversal of 43043642613 is 31624634034.

43043642613 is a `hidden beast` number, since 4 + 3 + 0 + 4 + 3 + 642 + 6 + 1 + 3 = 666.

It can be written as a sum of positive squares in only one way, i.e., 28518090129 + 14525552484 = 168873^2 + 120522^2 .

It is not a de Polignac number, because 43043642613 - 2¹³ = 43043634421 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43043642623) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2391313470 + ... + 2391313487.

It is an arithmetic number, because the mean of its divisors is an integer number (10362358409).

Almost surely, 2^43043642613 is an apocalyptic number.

It is an amenable number.

43043642613 is a deficient number, since it is larger than the sum of its proper divisors (19130507841).

43043642613 is a wasteful number, since it uses less digits than its factorization.

43043642613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4782626963 (or 4782626960 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 36.

The spelling of 43043642613 in words is "forty-three billion, forty-three million, six hundred forty-two thousand, six hundred thirteen".