1669055639444 has 24 divisors (see below), whose sum is σ = 2935935525600. Its totient is φ = 830217673376.

The previous prime is 1669055639429. The next prime is 1669055639479. The reversal of 1669055639444 is 4449365509661.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9357407 + ... + 9534105.

It is an arithmetic number, because the mean of its divisors is an integer number (122330646900).

Almost surely, 2^{1669055639444} is an apocalyptic number.

It is an amenable number.

1669055639444 is a deficient number, since it is larger than the sum of its proper divisors (1266879886156).

1669055639444 is a wasteful number, since it uses less digits than its factorization.

1669055639444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 188887 (or 188885 counting only the distinct ones).

The product of its (nonzero) digits is 83980800, while the sum is 62.

The spelling of 1669055639444 in words is "one trillion, six hundred sixty-nine billion, fifty-five million, six hundred thirty-nine thousand, four hundred forty-four".