65005305389 has 2 divisors, whose sum is σ = 65005305390. Its totient is φ = 65005305388.

The previous prime is 65005305377. The next prime is 65005305457. The reversal of 65005305389 is 98350350056.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 47313645289 + 17691660100 = 217517^2 + 133010^2 .

It is a cyclic number.

It is not a de Polignac number, because 65005305389 - 2⁸ = 65005305133 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (65005305889) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32502652694 + 32502652695.

It is an arithmetic number, because the mean of its divisors is an integer number (32502652695).

Almost surely, 2^65005305389 is an apocalyptic number.

It is an amenable number.

65005305389 is a deficient number, since it is larger than the sum of its proper divisors (1).

65005305389 is an equidigital number, since it uses as much as digits as its factorization.

65005305389 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 486000, while the sum is 44.

The spelling of 65005305389 in words is "sixty-five billion, five million, three hundred five thousand, three hundred eighty-nine".