565485785406449 has 2 divisors, whose sum is σ = 565485785406450. Its totient is φ = 565485785406448.

The previous prime is 565485785406433. The next prime is 565485785406463. The reversal of 565485785406449 is 944604587584565.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 436109378765824 + 129376406640625 = 20883232^2 + 11374375^2 .

It is a cyclic number.

It is not a de Polignac number, because 565485785406449 - 2⁴ = 565485785406433 is a prime.

It is not a weakly prime, because it can be changed into another prime (565485785406499) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 282742892703224 + 282742892703225.

It is an arithmetic number, because the mean of its divisors is an integer number (282742892703225).

Almost surely, 2^{565485785406449} is an apocalyptic number.

It is an amenable number.

565485785406449 is a deficient number, since it is larger than the sum of its proper divisors (1).

565485785406449 is an equidigital number, since it uses as much as digits as its factorization.

565485785406449 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 23224320000, while the sum is 80.

The spelling of 565485785406449 in words is "five hundred sixty-five trillion, four hundred eighty-five billion, seven hundred eighty-five million, four hundred six thousand, four hundred forty-nine".