564778388134778 has 8 divisors (see below), whose sum is σ = 848149236413568. Its totient is φ = 282061975996924.

The previous prime is 564778388134771. The next prime is 564778388134801. The reversal of 564778388134778 is 877431883877465.

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

It is a self number, because there is not a number n which added to its sum of digits gives 564778388134778.

It is not an unprimeable number, because it can be changed into a prime (564778388134771) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 163609033076 + ... + 163609036527.

It is an arithmetic number, because the mean of its divisors is an integer number (106018654551696).

Almost surely, 2^{564778388134778} is an apocalyptic number.

564778388134778 is a deficient number, since it is larger than the sum of its proper divisors (283370848278790).

564778388134778 is a wasteful number, since it uses less digits than its factorization.

564778388134778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 327218070468.

The product of its digits is 42485022720, while the sum is 86.

The spelling of 564778388134778 in words is "five hundred sixty-four trillion, seven hundred seventy-eight billion, three hundred eighty-eight million, one hundred thirty-four thousand, seven hundred seventy-eight".