561068774784 has 256 divisors, whose sum is σ = 1911239769600. Its totient is φ = 158717491200.

The previous prime is 561068774779. The next prime is 561068774807. The reversal of 561068774784 is 487477860165.

561068774784 is a `hidden beast` number, since 5 + 610 + 6 + 8 + 7 + 7 + 4 + 7 + 8 + 4 = 666.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2328579 + ... + 2558205.

It is an arithmetic number, because the mean of its divisors is an integer number (7465780350).

Almost surely, 2^561068774784 is an apocalyptic number.

561068774784 is a gapful number since it is divisible by the number (54) 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 561068774784, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (955619884800).

561068774784 is an abundant number, since it is smaller than the sum of its proper divisors (1350170994816).

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

561068774784 is a wasteful number, since it uses less digits than its factorization.

561068774784 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 229758 (or 229740 counting only the distinct ones).

The product of its (nonzero) digits is 63221760, while the sum is 63.

The spelling of 561068774784 in words is "five hundred sixty-one billion, sixty-eight million, seven hundred seventy-four thousand, seven hundred eighty-four".