564778404375227 has 16 divisors (see below), whose sum is σ = 656081544022272. Its totient is φ = 476131340293920.

The previous prime is 564778404375223. The next prime is 564778404375233. The reversal of 564778404375227 is 722573404877465.

It is a cyclic number.

It is not a de Polignac number, because 564778404375227 - 2² = 564778404375223 is a prime.

It is a super-2 number, since 2×564778404375227² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (564778404375223) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 32338673 + ... + 46640610.

It is an arithmetic number, because the mean of its divisors is an integer number (41005096501392).

Almost surely, 2^{564778404375227} is an apocalyptic number.

564778404375227 is a deficient number, since it is larger than the sum of its proper divisors (91303139647045).

564778404375227 is a wasteful number, since it uses less digits than its factorization.

564778404375227 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78996098.

The product of its (nonzero) digits is 2212761600, while the sum is 71.

The spelling of 564778404375227 in words is "five hundred sixty-four trillion, seven hundred seventy-eight billion, four hundred four million, three hundred seventy-five thousand, two hundred twenty-seven".