16679405856 has 96 divisors (see below), whose sum is σ = 44338287168. Its totient is φ = 5489786880.

The previous prime is 16679405807. The next prime is 16679405929. The reversal of 16679405856 is 65850497661.

It is a tau number, because it is divible by the number of its divisors (96).

It is a junction number, because it is equal to n+sod(n) for n = 16679405796 and 16679405805.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2535051 + ... + 2541621.

It is an arithmetic number, because the mean of its divisors is an integer number (461857158).

Almost surely, 2^16679405856 is an apocalyptic number.

16679405856 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 16679405856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22169143584).

16679405856 is an abundant number, since it is smaller than the sum of its proper divisors (27658881312).

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

16679405856 is a wasteful number, since it uses less digits than its factorization.

16679405856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6914 (or 6906 counting only the distinct ones).

The product of its (nonzero) digits is 10886400, while the sum is 57.

The spelling of 16679405856 in words is "sixteen billion, six hundred seventy-nine million, four hundred five thousand, eight hundred fifty-six".