563879344561 has 27 divisors (see below), whose sum is σ = 624366984801. Its totient is φ = 509014949664.

The previous prime is 563879344537. The next prime is 563879344643. The reversal of 563879344561 is 165443978365.

It is a happy number.

The square root of 563879344561 is 750919.

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 43253600625 + 520625743936 = 207975^2 + 721544^2 .

It is not a de Polignac number, because 563879344561 - 2⁷ = 563879344433 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 563879344561.

It is not an unprimeable number, because it can be changed into a prime (563879344531) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 458810895 + ... + 458812123.

Almost surely, 2^563879344561 is an apocalyptic number.

563879344561 is the 750919-th square number.

563879344561 is the 375460-th centered octagonal number.

It is an amenable number.

563879344561 is a deficient number, since it is larger than the sum of its proper divisors (60487640240).

563879344561 is an frugal number, since it uses more digits than its factorization.

563879344561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2578 (or 1289 counting only the distinct ones).

The product of its digits is 65318400, while the sum is 61.

The spelling of 563879344561 in words is "five hundred sixty-three billion, eight hundred seventy-nine million, three hundred forty-four thousand, five hundred sixty-one".