1639869665048 has 16 divisors (see below), whose sum is σ = 3085620487080. Its totient is φ = 817037535168.

The previous prime is 1639869664997. The next prime is 1639869665101. The reversal of 1639869665048 is 8405669689361.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 362159765 + ... + 362164292.

Almost surely, 2^{1639869665048} is an apocalyptic number.

It is an amenable number.

1639869665048 is a deficient number, since it is larger than the sum of its proper divisors (1445750822032).

1639869665048 is a wasteful number, since it uses less digits than its factorization.

1639869665048 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 724324346 (or 724324342 counting only the distinct ones).

The product of its (nonzero) digits is 403107840, while the sum is 71.

The spelling of 1639869665048 in words is "one trillion, six hundred thirty-nine billion, eight hundred sixty-nine million, six hundred sixty-five thousand, forty-eight".