577388536561 has 2 divisors, whose sum is σ = 577388536562. Its totient is φ = 577388536560.

The previous prime is 577388536547. The next prime is 577388536567. The reversal of 577388536561 is 165635883775.

It is a happy number.

577388536561 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., 558696451600 + 18692084961 = 747460^2 + 136719^2 .

It is a cyclic number.

It is not a de Polignac number, because 577388536561 - 2²⁵ = 577354982129 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 577388536493 and 577388536502.

It is not a weakly prime, because it can be changed into another prime (577388536567) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 288694268280 + 288694268281.

It is an arithmetic number, because the mean of its divisors is an integer number (288694268281).

Almost surely, 2^577388536561 is an apocalyptic number.

It is an amenable number.

577388536561 is a deficient number, since it is larger than the sum of its proper divisors (1).

577388536561 is an equidigital number, since it uses as much as digits as its factorization.

577388536561 is an evil number, because the sum of its binary digits is even.

The product of its digits is 127008000, while the sum is 64.

The spelling of 577388536561 in words is "five hundred seventy-seven billion, three hundred eighty-eight million, five hundred thirty-six thousand, five hundred sixty-one".