68143933843 has 2 divisors, whose sum is σ = 68143933844. Its totient is φ = 68143933842.

The previous prime is 68143933841. The next prime is 68143933861. The reversal of 68143933843 is 34833934186.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 68143933843 - 2¹ = 68143933841 is a prime.

Together with 68143933841, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (68143933841) 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, 34071966921 + 34071966922.

It is an arithmetic number, because the mean of its divisors is an integer number (34071966922).

Almost surely, 2^68143933843 is an apocalyptic number.

68143933843 is a deficient number, since it is larger than the sum of its proper divisors (1).

68143933843 is an equidigital number, since it uses as much as digits as its factorization.

68143933843 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4478976, while the sum is 52.

The spelling of 68143933843 in words is "sixty-eight billion, one hundred forty-three million, nine hundred thirty-three thousand, eight hundred forty-three".