564773661220340 has 192 divisors, whose sum is σ = 1397767040651520. Its totient is φ = 188977065984000.

The previous prime is 564773661220253. The next prime is 564773661220441. The reversal of 564773661220340 is 43022166377465.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1554259796 + ... + 1554623124.

It is an arithmetic number, because the mean of its divisors is an integer number (7280036670060).

Almost surely, 2^{564773661220340} 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 564773661220340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (698883520325760).

564773661220340 is an abundant number, since it is smaller than the sum of its proper divisors (832993379431180).

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

564773661220340 is a wasteful number, since it uses less digits than its factorization.

564773661220340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 365074 (or 365072 counting only the distinct ones).

The product of its (nonzero) digits is 30481920, while the sum is 56.

The spelling of 564773661220340 in words is "five hundred sixty-four trillion, seven hundred seventy-three billion, six hundred sixty-one million, two hundred twenty thousand, three hundred forty".