16678638856 has 32 divisors (see below), whose sum is σ = 34303913280. Its totient is φ = 7539307200.

The previous prime is 16678638839. The next prime is 16678638877. The reversal of 16678638856 is 65883687661.

16678638856 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 507636 + ... + 539491.

It is an arithmetic number, because the mean of its divisors is an integer number (1071997290).

Almost surely, 2^16678638856 is an apocalyptic number.

It is an amenable number.

16678638856 is an abundant number, since it is smaller than the sum of its proper divisors (17625274424).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

16678638856 is a wasteful number, since it uses less digits than its factorization.

16678638856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1047325 (or 1047321 counting only the distinct ones).

The product of its digits is 69672960, while the sum is 64.

The spelling of 16678638856 in words is "sixteen billion, six hundred seventy-eight million, six hundred thirty-eight thousand, eight hundred fifty-six".