9535999961 has 2 divisors, whose sum is σ = 9535999962. Its totient is φ = 9535999960.

The previous prime is 9535999937. The next prime is 9535999969. The reversal of 9535999961 is 1699995359.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5331774361 + 4204225600 = 73019^2 + 64840^2 .

It is a cyclic number.

It is not a de Polignac number, because 9535999961 - 2⁶ = 9535999897 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (9535999969) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4767999980 + 4767999981.

It is an arithmetic number, because the mean of its divisors is an integer number (4767999981).

Almost surely, 2^9535999961 is an apocalyptic number.

It is an amenable number.

9535999961 is a deficient number, since it is larger than the sum of its proper divisors (1).

9535999961 is an equidigital number, since it uses as much as digits as its factorization.

9535999961 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 26572050, while the sum is 65.

The square root of 9535999961 is about 97652.4447261818. Note that the first 3 decimals coincide. The cubic root of 9535999961 is about 2120.5836740615.

The spelling of 9535999961 in words is "nine billion, five hundred thirty-five million, nine hundred ninety-nine thousand, nine hundred sixty-one".