9553366561 has 2 divisors, whose sum is σ = 9553366562. Its totient is φ = 9553366560.

The previous prime is 9553366517. The next prime is 9553366567. The reversal of 9553366561 is 1656633559.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5490069025 + 4063297536 = 74095^2 + 63744^2 .

It is a cyclic number.

It is not a de Polignac number, because 9553366561 - 2⁹ = 9553366049 is a prime.

It is not a weakly prime, because it can be changed into another prime (9553366567) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4776683280 + 4776683281.

It is an arithmetic number, because the mean of its divisors is an integer number (4776683281).

Almost surely, 2^9553366561 is an apocalyptic number.

It is an amenable number.

9553366561 is a deficient number, since it is larger than the sum of its proper divisors (1).

9553366561 is an equidigital number, since it uses as much as digits as its factorization.

9553366561 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2187000, while the sum is 49.

The square root of 9553366561 is about 97741.3247352418. The cubic root of 9553366561 is about 2121.8702021305.

The spelling of 9553366561 in words is "nine billion, five hundred fifty-three million, three hundred sixty-six thousand, five hundred sixty-one".