64018725593 has 2 divisors, whose sum is σ = 64018725594. Its totient is φ = 64018725592.

The previous prime is 64018725583. The next prime is 64018725637. The reversal of 64018725593 is 39552781046.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 50790735424 + 13227990169 = 225368^2 + 115013^2 .

It is a cyclic number.

It is not a de Polignac number, because 64018725593 - 2¹⁰ = 64018724569 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (64018725503) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32009362796 + 32009362797.

It is an arithmetic number, because the mean of its divisors is an integer number (32009362797).

It is a 1-persistent number, because it is pandigital, but 2⋅64018725593 = 128037451186 is not.

Almost surely, 2^64018725593 is an apocalyptic number.

It is an amenable number.

64018725593 is a deficient number, since it is larger than the sum of its proper divisors (1).

64018725593 is an equidigital number, since it uses as much as digits as its factorization.

64018725593 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1814400, while the sum is 50.

The spelling of 64018725593 in words is "sixty-four billion, eighteen million, seven hundred twenty-five thousand, five hundred ninety-three".