563461581996 has 144 divisors (see below), whose sum is σ = 1539319541760. Its totient is φ = 173252069760.

The previous prime is 563461581961. The next prime is 563461582043. The reversal of 563461581996 is 699185164365.

563461581996 is a `hidden beast` number, since 5 + 6 + 3 + 4 + 615 + 8 + 1 + 9 + 9 + 6 = 666.

It is a Smith number, since the sum of its digits (63) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 20708761 + ... + 20735951.

It is an arithmetic number, because the mean of its divisors is an integer number (10689719040).

Almost surely, 2^563461581996 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 563461581996, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (769659770880).

563461581996 is an abundant number, since it is smaller than the sum of its proper divisors (975857959764).

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

563461581996 is a wasteful number, since it uses less digits than its factorization.

563461581996 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28116 (or 28111 counting only the distinct ones).

The product of its digits is 41990400, while the sum is 63.

The spelling of 563461581996 in words is "five hundred sixty-three billion, four hundred sixty-one million, five hundred eighty-one thousand, nine hundred ninety-six".