16876781394496 has 63 divisors (see below), whose sum is σ = 34137192926011. Its totient is φ = 8278321286144.

The previous prime is 16876781394491. The next prime is 16876781394521. The reversal of 16876781394496 is 69449318767861.

The square root of 16876781394496 is 4108136.

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

It can be written as a sum of positive squares in 4 ways, for example, as 1353685710400 + 15523095684096 = 1163480^2 + 3939936^2 .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16876781394491) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 1741844820 + ... + 1741854508.

Almost surely, 2^{16876781394496} is an apocalyptic number.

16876781394496 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

16876781394496 is the 4108136-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 16876781394496

16876781394496 is an abundant number, since it is smaller than the sum of its proper divisors (17260411531515).

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

16876781394496 is an frugal number, since it uses more digits than its factorization.

16876781394496 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19496 (or 9744 counting only the distinct ones).

The product of its digits is 2633637888, while the sum is 79.

The spelling of 16876781394496 in words is "sixteen trillion, eight hundred seventy-six billion, seven hundred eighty-one million, three hundred ninety-four thousand, four hundred ninety-six".