65193549089 has 2 divisors, whose sum is σ = 65193549090. Its totient is φ = 65193549088.

The previous prime is 65193549079. The next prime is 65193549139. The reversal of 65193549089 is 98094539156.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 33045059089 + 32148490000 = 181783^2 + 179300^2 .

It is a cyclic number.

It is not a de Polignac number, because 65193549089 - 2⁴ = 65193549073 is a prime.

It is not a weakly prime, because it can be changed into another prime (65193549049) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32596774544 + 32596774545.

It is an arithmetic number, because the mean of its divisors is an integer number (32596774545).

Almost surely, 2^65193549089 is an apocalyptic number.

It is an amenable number.

65193549089 is a deficient number, since it is larger than the sum of its proper divisors (1).

65193549089 is an equidigital number, since it uses as much as digits as its factorization.

65193549089 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10497600, while the sum is 59.

The spelling of 65193549089 in words is "sixty-five billion, one hundred ninety-three million, five hundred forty-nine thousand, eighty-nine".