563887673856 has 960 divisors, whose sum is σ = 1976490996480. Its totient is φ = 152882380800.

The previous prime is 563887673851. The next prime is 563887673887. The reversal of 563887673856 is 658376788365.

563887673856 is a `hidden beast` number, since 563 + 8 + 8 + 7 + 6 + 7 + 3 + 8 + 56 = 666.

It is a Harshad number since it is a multiple of its sum of digits (72).

It is not an unprimeable number, because it can be changed into a prime (563887673851) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 2921697696 + ... + 2921697888.

It is an arithmetic number, because the mean of its divisors is an integer number (2058844788).

Almost surely, 2^563887673856 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 563887673856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (988245498240).

563887673856 is an abundant number, since it is smaller than the sum of its proper divisors (1412603322624).

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

563887673856 is a wasteful number, since it uses less digits than its factorization.

563887673856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 417 (or 398 counting only the distinct ones).

The product of its digits is 1219276800, while the sum is 72.

The spelling of 563887673856 in words is "five hundred sixty-three billion, eight hundred eighty-seven million, six hundred seventy-three thousand, eight hundred fifty-six".