1678226973671 has 2 divisors, whose sum is σ = 1678226973672. Its totient is φ = 1678226973670.

The previous prime is 1678226973649. The next prime is 1678226973701. The reversal of 1678226973671 is 1763796228761.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1678226973671 - 2¹⁰ = 1678226972647 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1678226973598 and 1678226973607.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1678226573671) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 839113486835 + 839113486836.

It is an arithmetic number, because the mean of its divisors is an integer number (839113486836).

Almost surely, 2^{1678226973671} is an apocalyptic number.

1678226973671 is a deficient number, since it is larger than the sum of its proper divisors (1).

1678226973671 is an equidigital number, since it uses as much as digits as its factorization.

1678226973671 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 64012032, while the sum is 65.

The spelling of 1678226973671 in words is "one trillion, six hundred seventy-eight billion, two hundred twenty-six million, nine hundred seventy-three thousand, six hundred seventy-one".