671063517463439 has 2 divisors, whose sum is σ = 671063517463440. Its totient is φ = 671063517463438.

The previous prime is 671063517463421. The next prime is 671063517463481. The reversal of 671063517463439 is 934364715360176.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 671063517463439 - 2¹² = 671063517459343 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (671063517163439) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 335531758731719 + 335531758731720.

It is an arithmetic number, because the mean of its divisors is an integer number (335531758731720).

Almost surely, 2^{671063517463439} is an apocalyptic number.

671063517463439 is a deficient number, since it is larger than the sum of its proper divisors (1).

671063517463439 is an equidigital number, since it uses as much as digits as its factorization.

671063517463439 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 205752960, while the sum is 65.

The spelling of 671063517463439 in words is "six hundred seventy-one trillion, sixty-three billion, five hundred seventeen million, four hundred sixty-three thousand, four hundred thirty-nine".