16885440000 has 1200 divisors, whose sum is σ = 73287278064. Its totient is φ = 3686400000.

The previous prime is 16885439999. The next prime is 16885440001. The reversal of 16885440000 is 4458861.

It is an interprime number because it is at equal distance from previous prime (16885439999) and next prime (16885440001).

It is a tau number, because it is divible by the number of its divisors (1200).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16885440001) by changing a digit.

It is a polite number, since it can be written in 119 ways as a sum of consecutive naturals, for example, 411839980 + ... + 411840020.

Almost surely, 2^16885440000 is an apocalyptic number.

16885440000 is a gapful number since it is divisible by the number (10) 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 16885440000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36643639032).

16885440000 is an abundant number, since it is smaller than the sum of its proper divisors (56401838064).

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

16885440000 is a wasteful number, since it uses less digits than its factorization.

16885440000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109 (or 75 counting only the distinct ones).

The product of its (nonzero) digits is 30720, while the sum is 36.

Adding to 16885440000 its reverse (4458861), we get a palindrome (16889898861).

The spelling of 16885440000 in words is "sixteen billion, eight hundred eighty-five million, four hundred forty thousand".