16678855428816 has 40 divisors (see below), whose sum is σ = 49242335076544. Its totient is φ = 4765387265280.

The previous prime is 16678855428757. The next prime is 16678855428853. The reversal of 16678855428816 is 61882455887661.

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, 24819725005 + ... + 24819725676.

Almost surely, 2^{16678855428816} is an apocalyptic number.

16678855428816 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

16678855428816 is an abundant number, since it is smaller than the sum of its proper divisors (32563479647728).

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

16678855428816 is a wasteful number, since it uses less digits than its factorization.

16678855428816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49639450699 (or 49639450693 counting only the distinct ones).

The product of its digits is 1238630400, while the sum is 75.

The spelling of 16678855428816 in words is "sixteen trillion, six hundred seventy-eight billion, eight hundred fifty-five million, four hundred twenty-eight thousand, eight hundred sixteen".