564778404387078 has 16 divisors (see below), whose sum is σ = 1290922067170560. Its totient is φ = 161365258396296.

The previous prime is 564778404387011. The next prime is 564778404387079. The reversal of 564778404387078 is 870783404877465.

It is a junction number, because it is equal to n+sod(n) for n = 564778404386994 and 564778404387012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (564778404387079) 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, 6723552433138 + ... + 6723552433221.

It is an arithmetic number, because the mean of its divisors is an integer number (80682629198160).

Almost surely, 2^{564778404387078} is an apocalyptic number.

564778404387078 is an abundant number, since it is smaller than the sum of its proper divisors (726143662783482).

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

564778404387078 is a wasteful number, since it uses less digits than its factorization.

564778404387078 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13447104866371.

The product of its (nonzero) digits is 7080837120, while the sum is 78.

The spelling of 564778404387078 in words is "five hundred sixty-four trillion, seven hundred seventy-eight billion, four hundred four million, three hundred eighty-seven thousand, seventy-eight".