564221920404 has 24 divisors (see below), whose sum is σ = 1352099377888. Its totient is φ = 182990892960.

The previous prime is 564221920403. The next prime is 564221920411. The reversal of 564221920404 is 404029122465.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (564221920403) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 635384602 + ... + 635385489.

Almost surely, 2^564221920404 is an apocalyptic number.

It is an amenable number.

564221920404 is an abundant number, since it is smaller than the sum of its proper divisors (787877457484).

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

564221920404 is a wasteful number, since it uses less digits than its factorization.

564221920404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1270770135 (or 1270770133 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 39.

The spelling of 564221920404 in words is "five hundred sixty-four billion, two hundred twenty-one million, nine hundred twenty thousand, four hundred four".