565485785406457 has 4 divisors (see below), whose sum is σ = 566034268225536. Its totient is φ = 564937302587380.

The previous prime is 565485785406449. The next prime is 565485785406463. The reversal of 565485785406457 is 754604587584565.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 565485785406457 - 2³ = 565485785406449 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (565485785406557) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 274241407993 + ... + 274241410054.

It is an arithmetic number, because the mean of its divisors is an integer number (141508567056384).

Almost surely, 2^{565485785406457} is an apocalyptic number.

It is an amenable number.

565485785406457 is a deficient number, since it is larger than the sum of its proper divisors (548482819079).

565485785406457 is a wasteful number, since it uses less digits than its factorization.

565485785406457 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 548482819078.

The product of its (nonzero) digits is 22579200000, while the sum is 79.

The spelling of 565485785406457 in words is "five hundred sixty-five trillion, four hundred eighty-five billion, seven hundred eighty-five million, four hundred six thousand, four hundred fifty-seven".