671823846943 has 2 divisors, whose sum is σ = 671823846944. Its totient is φ = 671823846942.

The previous prime is 671823846871. The next prime is 671823846989. The reversal of 671823846943 is 349648328176.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-671823846943 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (671823646943) 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, 335911923471 + 335911923472.

It is an arithmetic number, because the mean of its divisors is an integer number (335911923472).

Almost surely, 2^671823846943 is an apocalyptic number.

671823846943 is a deficient number, since it is larger than the sum of its proper divisors (1).

671823846943 is an equidigital number, since it uses as much as digits as its factorization.

671823846943 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 41803776, while the sum is 61.

The spelling of 671823846943 in words is "six hundred seventy-one billion, eight hundred twenty-three million, eight hundred forty-six thousand, nine hundred forty-three".