564778395719399 has 2 divisors, whose sum is σ = 564778395719400. Its totient is φ = 564778395719398.

The previous prime is 564778395719383. The next prime is 564778395719437. The reversal of 564778395719399 is 993917593877465.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 564778395719399 - 2⁴ = 564778395719383 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (564778395719309) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 282389197859699 + 282389197859700.

It is an arithmetic number, because the mean of its divisors is an integer number (282389197859700).

Almost surely, 2^{564778395719399} is an apocalyptic number.

564778395719399 is a deficient number, since it is larger than the sum of its proper divisors (1).

564778395719399 is an equidigital number, since it uses as much as digits as its factorization.

564778395719399 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 97218273600, while the sum is 92.

The spelling of 564778395719399 in words is "five hundred sixty-four trillion, seven hundred seventy-eight billion, three hundred ninety-five million, seven hundred nineteen thousand, three hundred ninety-nine".