1669090913999 has 2 divisors, whose sum is σ = 1669090914000. Its totient is φ = 1669090913998.

The previous prime is 1669090913921. The next prime is 1669090914017. The reversal of 1669090913999 is 9993190909661.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1669090913999 - 2¹² = 1669090909903 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1669090913899) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 834545456999 + 834545457000.

It is an arithmetic number, because the mean of its divisors is an integer number (834545457000).

Almost surely, 2^{1669090913999} is an apocalyptic number.

1669090913999 is a deficient number, since it is larger than the sum of its proper divisors (1).

1669090913999 is an equidigital number, since it uses as much as digits as its factorization.

1669090913999 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 57395628, while the sum is 71.

The spelling of 1669090913999 in words is "one trillion, six hundred sixty-nine billion, ninety million, nine hundred thirteen thousand, nine hundred ninety-nine".