1289813196667 has 2 divisors, whose sum is σ = 1289813196668. Its totient is φ = 1289813196666.

The previous prime is 1289813196631. The next prime is 1289813196673. The reversal of 1289813196667 is 7666913189821.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1289813196667 is a prime.

It is not a weakly prime, because it can be changed into another prime (1289813196967) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 644906598333 + 644906598334.

It is an arithmetic number, because the mean of its divisors is an integer number (644906598334).

Almost surely, 2^{1289813196667} is an apocalyptic number.

1289813196667 is a deficient number, since it is larger than the sum of its proper divisors (1).

1289813196667 is an equidigital number, since it uses as much as digits as its factorization.

1289813196667 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 47029248, while the sum is 67.

The spelling of 1289813196667 in words is "one trillion, two hundred eighty-nine billion, eight hundred thirteen million, one hundred ninety-six thousand, six hundred sixty-seven".