65533107989 has 2 divisors, whose sum is σ = 65533107990. Its totient is φ = 65533107988.

The previous prime is 65533107943. The next prime is 65533108007. The reversal of 65533107989 is 98970133556.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 63880035025 + 1653072964 = 252745^2 + 40658^2 .

It is a cyclic number.

It is not a de Polignac number, because 65533107989 - 2¹² = 65533103893 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 (65533107919) 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, 32766553994 + 32766553995.

It is an arithmetic number, because the mean of its divisors is an integer number (32766553995).

Almost surely, 2^65533107989 is an apocalyptic number.

It is an amenable number.

65533107989 is a deficient number, since it is larger than the sum of its proper divisors (1).

65533107989 is an equidigital number, since it uses as much as digits as its factorization.

65533107989 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6123600, while the sum is 56.

The spelling of 65533107989 in words is "sixty-five billion, five hundred thirty-three million, one hundred seven thousand, nine hundred eighty-nine".