564778216834847 has 8 divisors (see below), whose sum is σ = 566171514187776. Its totient is φ = 563386525591032.

The previous prime is 564778216834829. The next prime is 564778216834903. The reversal of 564778216834847 is 748438612877465.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-564778216834847 is a prime.

It is a super-2 number, since 2×564778216834847² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (564778216833847) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 400823123 + ... + 402229700.

It is an arithmetic number, because the mean of its divisors is an integer number (70771439273472).

Almost surely, 2^{564778216834847} is an apocalyptic number.

564778216834847 is a deficient number, since it is larger than the sum of its proper divisors (1393297352929).

564778216834847 is a wasteful number, since it uses less digits than its factorization.

564778216834847 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 803054557.

The product of its digits is 12138577920, while the sum is 80.

The spelling of 564778216834847 in words is "five hundred sixty-four trillion, seven hundred seventy-eight billion, two hundred sixteen million, eight hundred thirty-four thousand, eight hundred forty-seven".