1329000071669 has 2 divisors, whose sum is σ = 1329000071670. Its totient is φ = 1329000071668.

The previous prime is 1329000071603. The next prime is 1329000071687. The reversal of 1329000071669 is 9661700009231.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 842654233444 + 486345838225 = 917962^2 + 697385^2 .

It is a cyclic number.

It is not a de Polignac number, because 1329000071669 - 2²⁸ = 1328731636213 is a prime.

It is a super-2 number, since 2×1329000071669² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1329000071569) 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, 664500035834 + 664500035835.

It is an arithmetic number, because the mean of its divisors is an integer number (664500035835).

Almost surely, 2^{1329000071669} is an apocalyptic number.

It is an amenable number.

1329000071669 is a deficient number, since it is larger than the sum of its proper divisors (1).

1329000071669 is an equidigital number, since it uses as much as digits as its factorization.

1329000071669 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 122472, while the sum is 44.

The spelling of 1329000071669 in words is "one trillion, three hundred twenty-nine billion, seventy-one thousand, six hundred sixty-nine".