605123079661 has 2 divisors, whose sum is σ = 605123079662. Its totient is φ = 605123079660.

The previous prime is 605123079619. The next prime is 605123079713. The reversal of 605123079661 is 166970321506.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 479998166761 + 125124912900 = 692819^2 + 353730^2 .

It is a cyclic number.

It is not a de Polignac number, because 605123079661 - 2⁹ = 605123079149 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (605123079611) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 302561539830 + 302561539831.

It is an arithmetic number, because the mean of its divisors is an integer number (302561539831).

Almost surely, 2^605123079661 is an apocalyptic number.

It is an amenable number.

605123079661 is a deficient number, since it is larger than the sum of its proper divisors (1).

605123079661 is an equidigital number, since it uses as much as digits as its factorization.

605123079661 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 408240, while the sum is 46.

The spelling of 605123079661 in words is "six hundred five billion, one hundred twenty-three million, seventy-nine thousand, six hundred sixty-one".