1605460505317 has 2 divisors, whose sum is σ = 1605460505318. Its totient is φ = 1605460505316.

The previous prime is 1605460505269. The next prime is 1605460505333. The reversal of 1605460505317 is 7135050645061.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 899312719041 + 706147786276 = 948321^2 + 840326^2 .

It is a cyclic number.

It is not a de Polignac number, because 1605460505317 - 2⁷ = 1605460505189 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1605460505357) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 802730252658 + 802730252659.

It is an arithmetic number, because the mean of its divisors is an integer number (802730252659).

Almost surely, 2^{1605460505317} is an apocalyptic number.

It is an amenable number.

1605460505317 is a deficient number, since it is larger than the sum of its proper divisors (1).

1605460505317 is an equidigital number, since it uses as much as digits as its factorization.

1605460505317 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 378000, while the sum is 43.

The spelling of 1605460505317 in words is "one trillion, six hundred five billion, four hundred sixty million, five hundred five thousand, three hundred seventeen".