1669055639443 has 8 divisors (see below), whose sum is σ = 1671108480000. Its totient is φ = 1667004054408.

The previous prime is 1669055639429. The next prime is 1669055639479. The reversal of 1669055639443 is 3449365509661.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1669055639443 - 2³³ = 1660465704851 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1669055639243) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2360478 + ... + 2984956.

It is an arithmetic number, because the mean of its divisors is an integer number (208888560000).

Almost surely, 2^{1669055639443} is an apocalyptic number.

1669055639443 is a deficient number, since it is larger than the sum of its proper divisors (2052840557).

1669055639443 is a wasteful number, since it uses less digits than its factorization.

1669055639443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 627761.

The product of its (nonzero) digits is 62985600, while the sum is 61.

The spelling of 1669055639443 in words is "one trillion, six hundred sixty-nine billion, fifty-five million, six hundred thirty-nine thousand, four hundred forty-three".