16683618085884 has 144 divisors (see below), whose sum is σ = 43506232189056. Its totient is φ = 5387749632000.

The previous prime is 16683618085879. The next prime is 16683618085909. The reversal of 16683618085884 is 48858081638661.

16683618085884 is a `hidden beast` number, since 1 + 6 + 6 + 8 + 36 + 1 + 8 + 0 + 8 + 588 + 4 = 666.

It is a super-2 number, since 2×16683618085884² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

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, 1001589684 + ... + 1001606340.

It is an arithmetic number, because the mean of its divisors is an integer number (302126612424).

Almost surely, 2^{16683618085884} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 16683618085884, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21753116094528).

16683618085884 is an abundant number, since it is smaller than the sum of its proper divisors (26822614103172).

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

16683618085884 is a wasteful number, since it uses less digits than its factorization.

16683618085884 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22676 (or 22671 counting only the distinct ones).

The product of its (nonzero) digits is 424673280, while the sum is 72.

The spelling of 16683618085884 in words is "sixteen trillion, six hundred eighty-three billion, six hundred eighteen million, eighty-five thousand, eight hundred eighty-four".