16909814880 has 768 divisors, whose sum is σ = 70195507200. Its totient is φ = 3722526720.

The previous prime is 16909814821. The next prime is 16909814893. The reversal of 16909814880 is 8841890961.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 164172909 + ... + 164173011.

It is an arithmetic number, because the mean of its divisors is an integer number (91400400).

Almost surely, 2^16909814880 is an apocalyptic number.

16909814880 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 16909814880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35097753600).

16909814880 is an abundant number, since it is smaller than the sum of its proper divisors (53285692320).

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

16909814880 is a wasteful number, since it uses less digits than its factorization.

16909814880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 284 (or 270 counting only the distinct ones).

The product of its (nonzero) digits is 995328, while the sum is 54.

The spelling of 16909814880 in words is "sixteen billion, nine hundred nine million, eight hundred fourteen thousand, eight hundred eighty".