773798230561 has 2 divisors, whose sum is σ = 773798230562. Its totient is φ = 773798230560.

The previous prime is 773798230547. The next prime is 773798230591. The reversal of 773798230561 is 165032897377.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 713788419600 + 60009810961 = 844860^2 + 244969^2 .

It is a cyclic number.

It is not a de Polignac number, because 773798230561 - 2⁵ = 773798230529 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 773798230496 and 773798230505.

It is not a weakly prime, because it can be changed into another prime (773798230511) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 386899115280 + 386899115281.

It is an arithmetic number, because the mean of its divisors is an integer number (386899115281).

Almost surely, 2^773798230561 is an apocalyptic number.

It is an amenable number.

773798230561 is a deficient number, since it is larger than the sum of its proper divisors (1).

773798230561 is an equidigital number, since it uses as much as digits as its factorization.

773798230561 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13335840, while the sum is 58.

The spelling of 773798230561 in words is "seven hundred seventy-three billion, seven hundred ninety-eight million, two hundred thirty thousand, five hundred sixty-one".