16401318168 has 64 divisors (see below), whose sum is σ = 43270560000. Its totient is φ = 5166260352.

The previous prime is 16401318121. The next prime is 16401318173. The reversal of 16401318168 is 86181310461.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 135733 + ... + 226331.

It is an arithmetic number, because the mean of its divisors is an integer number (676102500).

Almost surely, 2^16401318168 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 16401318168, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21635280000).

16401318168 is an abundant number, since it is smaller than the sum of its proper divisors (26869241832).

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

16401318168 is a wasteful number, since it uses less digits than its factorization.

16401318168 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91024 (or 91020 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 39.

The spelling of 16401318168 in words is "sixteen billion, four hundred one million, three hundred eighteen thousand, one hundred sixty-eight".