9615648461 has 2 divisors, whose sum is σ = 9615648462. Its totient is φ = 9615648460.

The previous prime is 9615648439. The next prime is 9615648491. The reversal of 9615648461 is 1648465169.

9615648461 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., 9473323561 + 142324900 = 97331^2 + 11930^2 .

It is a cyclic number.

It is not a de Polignac number, because 9615648461 - 2¹⁸ = 9615386317 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9615648401) 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, 4807824230 + 4807824231.

It is an arithmetic number, because the mean of its divisors is an integer number (4807824231).

Almost surely, 2^9615648461 is an apocalyptic number.

It is an amenable number.

9615648461 is a deficient number, since it is larger than the sum of its proper divisors (1).

9615648461 is an equidigital number, since it uses as much as digits as its factorization.

9615648461 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1244160, while the sum is 50.

The square root of 9615648461 is about 98059.4129138045. The cubic root of 9615648461 is about 2126.4713011436.

The spelling of 9615648461 in words is "nine billion, six hundred fifteen million, six hundred forty-eight thousand, four hundred sixty-one".