1669534991339 has 16 divisors (see below), whose sum is σ = 1780391467008. Its totient is φ = 1560105747072.

The previous prime is 1669534991329. The next prime is 1669534991351. The reversal of 1669534991339 is 9331994359661.

It is a cyclic number.

It is not a de Polignac number, because 1669534991339 - 2⁴ = 1669534991323 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1669534991329) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2109344 + ... + 2790770.

It is an arithmetic number, because the mean of its divisors is an integer number (111274466688).

Almost surely, 2^{1669534991339} is an apocalyptic number.

1669534991339 is a deficient number, since it is larger than the sum of its proper divisors (110856475669).

1669534991339 is a wasteful number, since it uses less digits than its factorization.

1669534991339 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 682474.

The product of its digits is 127545840, while the sum is 68.

The spelling of 1669534991339 in words is "one trillion, six hundred sixty-nine billion, five hundred thirty-four million, nine hundred ninety-one thousand, three hundred thirty-nine".