16668183444 has 96 divisors (see below), whose sum is σ = 44464702464. Its totient is φ = 4810417920.

The previous prime is 16668183401. The next prime is 16668183451. The reversal of 16668183444 is 44438186661.

It is a super-2 number, since 2×16668183444² (a number of 21 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 31 ways as a sum of consecutive naturals, for example, 695607 + ... + 719169.

It is an arithmetic number, because the mean of its divisors is an integer number (463173984).

Almost surely, 2^16668183444 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 16668183444, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22232351232).

16668183444 is an abundant number, since it is smaller than the sum of its proper divisors (27796519020).

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

16668183444 is a wasteful number, since it uses less digits than its factorization.

16668183444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23837 (or 23835 counting only the distinct ones).

The product of its digits is 2654208, while the sum is 51.

The spelling of 16668183444 in words is "sixteen billion, six hundred sixty-eight million, one hundred eighty-three thousand, four hundred forty-four".