16855704320 has 144 divisors (see below), whose sum is σ = 49692256320. Its totient is φ = 5334515712.

The previous prime is 16855704269. The next prime is 16855704337. The reversal of 16855704320 is 2340755861.

It is a super-2 number, since 2×16855704320² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 44126 + ... + 188834.

Almost surely, 2^16855704320 is an apocalyptic number.

16855704320 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 16855704320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24846128160).

16855704320 is an abundant number, since it is smaller than the sum of its proper divisors (32836552000).

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

16855704320 is a wasteful number, since it uses less digits than its factorization.

16855704320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 144750 (or 144736 counting only the distinct ones).

The product of its (nonzero) digits is 201600, while the sum is 41.

The spelling of 16855704320 in words is "sixteen billion, eight hundred fifty-five million, seven hundred four thousand, three hundred twenty".