43040010109 has 2 divisors, whose sum is σ = 43040010110. Its totient is φ = 43040010108.

The previous prime is 43040010103. The next prime is 43040010119. The reversal of 43040010109 is 90101004034.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 36817166884 + 6222843225 = 191878^2 + 78885^2 .

It is a cyclic number.

It is not a de Polignac number, because 43040010109 - 2⁵ = 43040010077 is a prime.

It is a super-3 number, since 3×43040010109³ (a number of 33 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 43040010109.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (43040010103) 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 as a sum of consecutive naturals, namely, 21520005054 + 21520005055.

It is an arithmetic number, because the mean of its divisors is an integer number (21520005055).

Almost surely, 2^43040010109 is an apocalyptic number.

It is an amenable number.

43040010109 is a deficient number, since it is larger than the sum of its proper divisors (1).

43040010109 is an equidigital number, since it uses as much as digits as its factorization.

43040010109 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 432, while the sum is 22.

The spelling of 43040010109 in words is "forty-three billion, forty million, ten thousand, one hundred nine".