564778404377873 has 8 divisors (see below), whose sum is σ = 645461182237248. Its totient is φ = 484095663684144.

The previous prime is 564778404377861. The next prime is 564778404377927. The reversal of 564778404377873 is 378773404877465.

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

It is a cyclic number.

It is not a de Polignac number, because 564778404377873 - 2²⁴ = 564778387600657 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (564778404317873) 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, 42570590 + ... + 54238472.

It is an arithmetic number, because the mean of its divisors is an integer number (80682647779656).

Almost surely, 2^{564778404377873} is an apocalyptic number.

It is an amenable number.

564778404377873 is a deficient number, since it is larger than the sum of its proper divisors (80682777859375).

564778404377873 is a wasteful number, since it uses less digits than its factorization.

564778404377873 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18582823.

The product of its (nonzero) digits is 18587197440, while the sum is 80.

The spelling of 564778404377873 in words is "five hundred sixty-four trillion, seven hundred seventy-eight billion, four hundred four million, three hundred seventy-seven thousand, eight hundred seventy-three".