16440518808 has 384 divisors, whose sum is σ = 54562406400. Its totient is φ = 4629441600.

The previous prime is 16440518777. The next prime is 16440518833. The reversal of 16440518808 is 80881504461.

16440518808 is a `hidden beast` number, since 1 + 64 + 405 + 188 + 0 + 8 = 666.

It is a super-3 number, since 3×16440518808³ (a number of 32 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 108877533 + ... + 108877683.

It is an arithmetic number, because the mean of its divisors is an integer number (142089600).

Almost surely, 2^16440518808 is an apocalyptic number.

16440518808 is a gapful number since it is divisible by the number (18) 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 16440518808, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27281203200).

16440518808 is an abundant number, since it is smaller than the sum of its proper divisors (38121887592).

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

16440518808 is a wasteful number, since it uses less digits than its factorization.

16440518808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 319 (or 290 counting only the distinct ones).

The product of its (nonzero) digits is 245760, while the sum is 45.

The spelling of 16440518808 in words is "sixteen billion, four hundred forty million, five hundred eighteen thousand, eight hundred eight".