6330655561 has 2 divisors, whose sum is σ = 6330655562. Its totient is φ = 6330655560.

The previous prime is 6330655559. The next prime is 6330655567. The reversal of 6330655561 is 1655560336.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6325179961 + 5475600 = 79531^2 + 2340^2 .

It is a cyclic number.

It is not a de Polignac number, because 6330655561 - 2¹ = 6330655559 is a prime.

Together with 6330655559, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (6330655567) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3165327780 + 3165327781.

It is an arithmetic number, because the mean of its divisors is an integer number (3165327781).

Almost surely, 2^6330655561 is an apocalyptic number.

It is an amenable number.

6330655561 is a deficient number, since it is larger than the sum of its proper divisors (1).

6330655561 is an equidigital number, since it uses as much as digits as its factorization.

6330655561 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 243000, while the sum is 40.

The square root of 6330655561 is about 79565.4168656207. The cubic root of 6330655561 is about 1849.9055769680.

The spelling of 6330655561 in words is "six billion, three hundred thirty million, six hundred fifty-five thousand, five hundred sixty-one".