65078087089 has 2 divisors, whose sum is σ = 65078087090. Its totient is φ = 65078087088.

The previous prime is 65078087051. The next prime is 65078087093. The reversal of 65078087089 is 98078087056.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 47520512064 + 17557575025 = 217992^2 + 132505^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-65078087089 is a prime.

It is not a weakly prime, because it can be changed into another prime (65078087189) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32539043544 + 32539043545.

It is an arithmetic number, because the mean of its divisors is an integer number (32539043545).

Almost surely, 2^65078087089 is an apocalyptic number.

It is an amenable number.

65078087089 is a deficient number, since it is larger than the sum of its proper divisors (1).

65078087089 is an equidigital number, since it uses as much as digits as its factorization.

65078087089 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6773760, while the sum is 58.

The spelling of 65078087089 in words is "sixty-five billion, seventy-eight million, eighty-seven thousand, eighty-nine".