511643454094343 has 2 divisors, whose sum is σ = 511643454094344. Its totient is φ = 511643454094342.

The previous prime is 511643454094321. The next prime is 511643454094373. The reversal of 511643454094343 is 343490454346115.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 511643454094343 - 2³⁶ = 511574734617607 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (511643454094373) 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, 255821727047171 + 255821727047172.

It is an arithmetic number, because the mean of its divisors is an integer number (255821727047172).

Almost surely, 2^{511643454094343} is an apocalyptic number.

511643454094343 is a deficient number, since it is larger than the sum of its proper divisors (1).

511643454094343 is an equidigital number, since it uses as much as digits as its factorization.

511643454094343 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 37324800, while the sum is 56.

The spelling of 511643454094343 in words is "five hundred eleven trillion, six hundred forty-three billion, four hundred fifty-four million, ninety-four thousand, three hundred forty-three".