16877218389444 has 288 divisors, whose sum is σ = 54378171456000. Its totient is φ = 4500084714048.

The previous prime is 16877218389439. The next prime is 16877218389467. The reversal of 16877218389444 is 44498381277861.

16877218389444 is a `hidden beast` number, since 1 + 6 + 8 + 7 + 7 + 21 + 83 + 89 + 444 = 666.

It is an unprimeable number.

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 95 ways as a sum of consecutive naturals, for example, 5484087 + ... + 7989345.

Almost surely, 2^{16877218389444} is an apocalyptic number.

16877218389444 is a gapful number since it is divisible by the number (14) 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 16877218389444, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27189085728000).

16877218389444 is an abundant number, since it is smaller than the sum of its proper divisors (37500953066556).

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

16877218389444 is a wasteful number, since it uses less digits than its factorization.

16877218389444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2505372 (or 2505357 counting only the distinct ones).

The product of its digits is 520224768, while the sum is 72.

The spelling of 16877218389444 in words is "sixteen trillion, eight hundred seventy-seven billion, two hundred eighteen million, three hundred eighty-nine thousand, four hundred forty-four".