16563771510244 has 96 divisors (see below), whose sum is σ = 34648301318400. Its totient is φ = 6778521469440.

The previous prime is 16563771510107. The next prime is 16563771510283. The reversal of 16563771510244 is 44201517736561.

It is a junction number, because it is equal to n+sod(n) for n = 16563771510191 and 16563771510200.

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 31 ways as a sum of consecutive naturals, for example, 47709867 + ... + 48055789.

It is an arithmetic number, because the mean of its divisors is an integer number (360919805400).

Almost surely, 2^{16563771510244} is an apocalyptic number.

16563771510244 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 16563771510244, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17324150659200).

16563771510244 is an abundant number, since it is smaller than the sum of its proper divisors (18084529808156).

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

16563771510244 is a wasteful number, since it uses less digits than its factorization.

16563771510244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 346613 (or 346611 counting only the distinct ones).

The product of its (nonzero) digits is 4233600, while the sum is 52.

The spelling of 16563771510244 in words is "sixteen trillion, five hundred sixty-three billion, seven hundred seventy-one million, five hundred ten thousand, two hundred forty-four".