43640506565107 has 2 divisors, whose sum is σ = 43640506565108. Its totient is φ = 43640506565106.

The previous prime is 43640506565099. The next prime is 43640506565119. The reversal of 43640506565107 is 70156560504634.

43640506565107 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 43640506565107 - 2³ = 43640506565099 is a prime.

It is not a weakly prime, because it can be changed into another prime (43640506565167) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21820253282553 + 21820253282554.

It is an arithmetic number, because the mean of its divisors is an integer number (21820253282554).

Almost surely, 2^{43640506565107} is an apocalyptic number.

43640506565107 is a deficient number, since it is larger than the sum of its proper divisors (1).

43640506565107 is an equidigital number, since it uses as much as digits as its factorization.

43640506565107 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9072000, while the sum is 52.

The spelling of 43640506565107 in words is "forty-three trillion, six hundred forty billion, five hundred six million, five hundred sixty-five thousand, one hundred seven".