577673120809 has 2 divisors, whose sum is σ = 577673120810. Its totient is φ = 577673120808.

The previous prime is 577673120741. The next prime is 577673120819. The reversal of 577673120809 is 908021376775.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 454592835225 + 123080285584 = 674235^2 + 350828^2 .

It is a cyclic number.

It is not a de Polignac number, because 577673120809 - 2⁷ = 577673120681 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 577673120809.

It is not a weakly prime, because it can be changed into another prime (577673120819) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 288836560404 + 288836560405.

It is an arithmetic number, because the mean of its divisors is an integer number (288836560405).

Almost surely, 2^577673120809 is an apocalyptic number.

It is an amenable number.

577673120809 is a deficient number, since it is larger than the sum of its proper divisors (1).

577673120809 is an equidigital number, since it uses as much as digits as its factorization.

577673120809 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4445280, while the sum is 55.

The spelling of 577673120809 in words is "five hundred seventy-seven billion, six hundred seventy-three million, one hundred twenty thousand, eight hundred nine".