605623442861 has 2 divisors, whose sum is σ = 605623442862. Its totient is φ = 605623442860.

The previous prime is 605623442839. The next prime is 605623442863. The reversal of 605623442861 is 168244326506.

605623442861 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 480395927236 + 125227515625 = 693106^2 + 353875^2 .

It is a cyclic number.

It is not a de Polignac number, because 605623442861 - 2¹⁰ = 605623441837 is a prime.

Together with 605623442863, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (605623442863) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 302811721430 + 302811721431.

It is an arithmetic number, because the mean of its divisors is an integer number (302811721431).

Almost surely, 2^605623442861 is an apocalyptic number.

It is an amenable number.

605623442861 is a deficient number, since it is larger than the sum of its proper divisors (1).

605623442861 is an equidigital number, since it uses as much as digits as its factorization.

605623442861 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1658880, while the sum is 47.

The spelling of 605623442861 in words is "six hundred five billion, six hundred twenty-three million, four hundred forty-two thousand, eight hundred sixty-one".