561727783356 has 96 divisors (see below), whose sum is σ = 1400024371200. Its totient is φ = 174905256960.

The previous prime is 561727783349. The next prime is 561727783361. The reversal of 561727783356 is 653387727165.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 561727783356.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 68424180 + ... + 68432388.

It is an arithmetic number, because the mean of its divisors is an integer number (14583587200).

Almost surely, 2^561727783356 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 561727783356, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (700012185600).

561727783356 is an abundant number, since it is smaller than the sum of its proper divisors (838296587844).

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

561727783356 is a wasteful number, since it uses less digits than its factorization.

561727783356 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14619 (or 14617 counting only the distinct ones).

The product of its digits is 44452800, while the sum is 60.

The spelling of 561727783356 in words is "five hundred sixty-one billion, seven hundred twenty-seven million, seven hundred eighty-three thousand, three hundred fifty-six".