10643342909 has 2 divisors, whose sum is σ = 10643342910. Its totient is φ = 10643342908.

The previous prime is 10643342863. The next prime is 10643342911. The reversal of 10643342909 is 90924334601.

10643342909 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10635796900 + 7546009 = 103130^2 + 2747^2 .

It is a cyclic number.

It is not a de Polignac number, because 10643342909 - 2²⁸ = 10374907453 is a prime.

It is a super-2 number, since 2×10643342909² (a number of 21 digits) contains 22 as substring.

Together with 10643342911, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10643342939) 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 as a sum of consecutive naturals, namely, 5321671454 + 5321671455.

It is an arithmetic number, because the mean of its divisors is an integer number (5321671455).

Almost surely, 2^10643342909 is an apocalyptic number.

It is an amenable number.

10643342909 is a deficient number, since it is larger than the sum of its proper divisors (1).

10643342909 is an equidigital number, since it uses as much as digits as its factorization.

10643342909 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 139968, while the sum is 41.

The spelling of 10643342909 in words is "ten billion, six hundred forty-three million, three hundred forty-two thousand, nine hundred nine".