16646976658744 has 16 divisors (see below), whose sum is σ = 31213383464520. Its totient is φ = 8323407734880.

The previous prime is 16646976658681. The next prime is 16646976658759. The reversal of 16646976658744 is 44785667964661.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9191919 + ... + 10852894.

Almost surely, 2^{16646976658744} is an apocalyptic number.

It is an amenable number.

16646976658744 is a deficient number, since it is larger than the sum of its proper divisors (14566406805776).

16646976658744 is a wasteful number, since it uses less digits than its factorization.

16646976658744 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20148630 (or 20148626 counting only the distinct ones).

The product of its digits is 8778792960, while the sum is 79.

The spelling of 16646976658744 in words is "sixteen trillion, six hundred forty-six billion, nine hundred seventy-six million, six hundred fifty-eight thousand, seven hundred forty-four".