1643332107343 has 2 divisors, whose sum is σ = 1643332107344. Its totient is φ = 1643332107342.

The previous prime is 1643332107341. The next prime is 1643332107383. The reversal of 1643332107343 is 3437012333461.

It is an a-pointer prime, because the next prime (1643332107383) can be obtained adding 1643332107343 to its sum of digits (40).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1643332107343 - 2¹ = 1643332107341 is a prime.

Together with 1643332107341, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 1643332107296 and 1643332107305.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1643332107341) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 821666053671 + 821666053672.

It is an arithmetic number, because the mean of its divisors is an integer number (821666053672).

Almost surely, 2^{1643332107343} is an apocalyptic number.

1643332107343 is a deficient number, since it is larger than the sum of its proper divisors (1).

1643332107343 is an equidigital number, since it uses as much as digits as its factorization.

1643332107343 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 326592, while the sum is 40.

The spelling of 1643332107343 in words is "one trillion, six hundred forty-three billion, three hundred thirty-two million, one hundred seven thousand, three hundred forty-three".