1669066465441 has 2 divisors, whose sum is σ = 1669066465442. Its totient is φ = 1669066465440.

The previous prime is 1669066465373. The next prime is 1669066465513. The reversal of 1669066465441 is 1445646609661.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 904629254400 + 764437211041 = 951120^2 + 874321^2 .

It is a cyclic number.

It is not a de Polignac number, because 1669066465441 - 2³⁹ = 1119310651553 is a prime.

It is not a weakly prime, because it can be changed into another prime (1669066465841) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 834533232720 + 834533232721.

It is an arithmetic number, because the mean of its divisors is an integer number (834533232721).

Almost surely, 2^{1669066465441} is an apocalyptic number.

It is an amenable number.

1669066465441 is a deficient number, since it is larger than the sum of its proper divisors (1).

1669066465441 is an equidigital number, since it uses as much as digits as its factorization.

1669066465441 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 22394880, while the sum is 58.

The spelling of 1669066465441 in words is "one trillion, six hundred sixty-nine billion, sixty-six million, four hundred sixty-five thousand, four hundred forty-one".