1605460766563 has 2 divisors, whose sum is σ = 1605460766564. Its totient is φ = 1605460766562.

The previous prime is 1605460766549. The next prime is 1605460766617. The reversal of 1605460766563 is 3656670645061.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1605460766563 - 2¹⁷ = 1605460635491 is a prime.

It is not a weakly prime, because it can be changed into another prime (1605460766363) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 802730383281 + 802730383282.

It is an arithmetic number, because the mean of its divisors is an integer number (802730383282).

Almost surely, 2^{1605460766563} is an apocalyptic number.

1605460766563 is a deficient number, since it is larger than the sum of its proper divisors (1).

1605460766563 is an equidigital number, since it uses as much as digits as its factorization.

1605460766563 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 16329600, while the sum is 55.

The spelling of 1605460766563 in words is "one trillion, six hundred five billion, four hundred sixty million, seven hundred sixty-six thousand, five hundred sixty-three".