9063781561 has 2 divisors, whose sum is σ = 9063781562. Its totient is φ = 9063781560.

The previous prime is 9063781549. The next prime is 9063781619. The reversal of 9063781561 is 1651873609.

It is a happy number.

9063781561 is digitally balanced in base 2 and base 3, because in such bases 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., 6164605225 + 2899176336 = 78515^2 + 53844^2 .

It is a cyclic number.

It is not a de Polignac number, because 9063781561 - 2⁹ = 9063781049 is a prime.

It is not a weakly prime, because it can be changed into another prime (9063785561) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4531890780 + 4531890781.

It is an arithmetic number, because the mean of its divisors is an integer number (4531890781).

Almost surely, 2^9063781561 is an apocalyptic number.

It is an amenable number.

9063781561 is a deficient number, since it is larger than the sum of its proper divisors (1).

9063781561 is an equidigital number, since it uses as much as digits as its factorization.

9063781561 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 272160, while the sum is 46.

The square root of 9063781561 is about 95203.8946734849. The cubic root of 9063781561 is about 2084.9860013974.

The spelling of 9063781561 in words is "nine billion, sixty-three million, seven hundred eighty-one thousand, five hundred sixty-one".