16879779913854 has 128 divisors (see below), whose sum is σ = 40758799173120. Its totient is φ = 4591153958400.

The previous prime is 16879779913823. The next prime is 16879779913883. The reversal of 16879779913854 is 45831997797861.

It is a super-3 number, since 3×16879779913854³ (a number of 41 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 51232564 + ... + 51560984.

It is an arithmetic number, because the mean of its divisors is an integer number (318428118540).

Almost surely, 2^{16879779913854} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 16879779913854, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20379399586560).

16879779913854 is an abundant number, since it is smaller than the sum of its proper divisors (23879019259266).

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

16879779913854 is a wasteful number, since it uses less digits than its factorization.

16879779913854 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 330106.

The product of its digits is 5761082880, while the sum is 84.

The spelling of 16879779913854 in words is "sixteen trillion, eight hundred seventy-nine billion, seven hundred seventy-nine million, nine hundred thirteen thousand, eight hundred fifty-four".