63557822609 has 2 divisors, whose sum is σ = 63557822610. Its totient is φ = 63557822608.

The previous prime is 63557822597. The next prime is 63557822623. The reversal of 63557822609 is 90622875536.

63557822609 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 43157985025 + 20399837584 = 207745^2 + 142828^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-63557822609 is a prime.

It is a super-3 number, since 3×63557822609³ (a number of 33 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not a weakly prime, because it can be changed into another prime (63557822309) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31778911304 + 31778911305.

It is an arithmetic number, because the mean of its divisors is an integer number (31778911305).

Almost surely, 2^63557822609 is an apocalyptic number.

It is an amenable number.

63557822609 is a deficient number, since it is larger than the sum of its proper divisors (1).

63557822609 is an equidigital number, since it uses as much as digits as its factorization.

63557822609 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5443200, while the sum is 53.

The spelling of 63557822609 in words is "sixty-three billion, five hundred fifty-seven million, eight hundred twenty-two thousand, six hundred nine".