563644870690 has 32 divisors (see below), whose sum is σ = 1165045861440. Its totient is φ = 194174308800.

The previous prime is 563644870673. The next prime is 563644870697. The reversal of 563644870690 is 96078446365.

It is a happy number.

It is a super-2 number, since 2×563644870690² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (563644870697) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 134841181 + ... + 134845360.

It is an arithmetic number, because the mean of its divisors is an integer number (36407683170).

Almost surely, 2^563644870690 is an apocalyptic number.

563644870690 is an abundant number, since it is smaller than the sum of its proper divisors (601400990750).

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

563644870690 is a wasteful number, since it uses less digits than its factorization.

563644870690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 269686578.

The product of its (nonzero) digits is 26127360, while the sum is 58.

The spelling of 563644870690 in words is "five hundred sixty-three billion, six hundred forty-four million, eight hundred seventy thousand, six hundred ninety".