605984777846813 has 2 divisors, whose sum is σ = 605984777846814. Its totient is φ = 605984777846812.

The previous prime is 605984777846759. The next prime is 605984777846827. The reversal of 605984777846813 is 318648777489506.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 378350854245049 + 227633923601764 = 19451243^2 + 15087542^2 .

It is a cyclic number.

It is not a de Polignac number, because 605984777846813 - 2²⁶ = 605984710737949 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (605984777846113) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 302992388923406 + 302992388923407.

It is an arithmetic number, because the mean of its divisors is an integer number (302992388923407).

Almost surely, 2^{605984777846813} is an apocalyptic number.

It is an amenable number.

605984777846813 is a deficient number, since it is larger than the sum of its proper divisors (1).

605984777846813 is an equidigital number, since it uses as much as digits as its factorization.

605984777846813 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13655900160, while the sum is 83.

The spelling of 605984777846813 in words is "six hundred five trillion, nine hundred eighty-four billion, seven hundred seventy-seven million, eight hundred forty-six thousand, eight hundred thirteen".