16678309626 has 96 divisors (see below), whose sum is σ = 40206067200. Its totient is φ = 4953947040.

The previous prime is 16678309603. The next prime is 16678309651. The reversal of 16678309626 is 62690387661.

16678309626 is a `hidden beast` number, since 1 + 6 + 6 + 7 + 8 + 3 + 0 + 9 + 626 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 4425595 + ... + 4429361.

It is an arithmetic number, because the mean of its divisors is an integer number (418813200).

Almost surely, 2^16678309626 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 16678309626, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20103033600).

16678309626 is an abundant number, since it is smaller than the sum of its proper divisors (23527757574).

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

16678309626 is a wasteful number, since it uses less digits than its factorization.

16678309626 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4224 (or 4221 counting only the distinct ones).

The product of its (nonzero) digits is 3919104, while the sum is 54.

The spelling of 16678309626 in words is "sixteen billion, six hundred seventy-eight million, three hundred nine thousand, six hundred twenty-six".