16895840256 has 117 divisors (see below), whose sum is σ = 48876442381. Its totient is φ = 5623627776.

The previous prime is 16895840239. The next prime is 16895840257. The reversal of 16895840256 is 65204859861.

The square root of 16895840256 is 129984.

It is a perfect power (a square), and thus also a powerful number.

16895840256 is a `hidden beast` number, since 1 + 6 + 8 + 9 + 584 + 0 + 2 + 56 = 666.

It can be written as a sum of positive squares in only one way, i.e., 16796160000 + 99680256 = 129600^2 + 9984^2 .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16895840257) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 24956590 + ... + 24957266.

Almost surely, 2^16895840256 is an apocalyptic number.

16895840256 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

16895840256 is the 129984-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 16895840256

16895840256 is an abundant number, since it is smaller than the sum of its proper divisors (31980602125).

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

16895840256 is an frugal number, since it uses more digits than its factorization.

16895840256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1384 (or 682 counting only the distinct ones).

The product of its (nonzero) digits is 4147200, while the sum is 54.

The spelling of 16895840256 in words is "sixteen billion, eight hundred ninety-five million, eight hundred forty thousand, two hundred fifty-six".