65304840389 has 2 divisors, whose sum is σ = 65304840390. Its totient is φ = 65304840388.

The previous prime is 65304840353. The next prime is 65304840427. The reversal of 65304840389 is 98304840356.

It is a happy number.

65304840389 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 52048772164 + 13256068225 = 228142^2 + 115135^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-65304840389 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (65304840319) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32652420194 + 32652420195.

It is an arithmetic number, because the mean of its divisors is an integer number (32652420195).

Almost surely, 2^65304840389 is an apocalyptic number.

It is an amenable number.

65304840389 is a deficient number, since it is larger than the sum of its proper divisors (1).

65304840389 is an equidigital number, since it uses as much as digits as its factorization.

65304840389 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2488320, while the sum is 50.

The spelling of 65304840389 in words is "sixty-five billion, three hundred four million, eight hundred forty thousand, three hundred eighty-nine".