8556033080561 has 2 divisors, whose sum is σ = 8556033080562. Its totient is φ = 8556033080560.

The previous prime is 8556033080557. The next prime is 8556033080579. The reversal of 8556033080561 is 1650803306558.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5467385003536 + 3088648077025 = 2338244^2 + 1757455^2 .

It is a cyclic number.

It is not a de Polignac number, because 8556033080561 - 2² = 8556033080557 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (8556033080461) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4278016540280 + 4278016540281.

It is an arithmetic number, because the mean of its divisors is an integer number (4278016540281).

Almost surely, 2^{8556033080561} is an apocalyptic number.

It is an amenable number.

8556033080561 is a deficient number, since it is larger than the sum of its proper divisors (1).

8556033080561 is an equidigital number, since it uses as much as digits as its factorization.

8556033080561 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2592000, while the sum is 50.

The spelling of 8556033080561 in words is "eight trillion, five hundred fifty-six billion, thirty-three million, eighty thousand, five hundred sixty-one".