65238428573 has 2 divisors, whose sum is σ = 65238428574. Its totient is φ = 65238428572.

The previous prime is 65238428569. The next prime is 65238428579. The reversal of 65238428573 is 37582483256.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 49496460484 + 15741968089 = 222478^2 + 125467^2 .

It is a cyclic number.

It is not a de Polignac number, because 65238428573 - 2² = 65238428569 is a prime.

It is a super-3 number, since 3×65238428573³ (a number of 33 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (65238428579) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32619214286 + 32619214287.

It is an arithmetic number, because the mean of its divisors is an integer number (32619214287).

Almost surely, 2^65238428573 is an apocalyptic number.

It is an amenable number.

65238428573 is a deficient number, since it is larger than the sum of its proper divisors (1).

65238428573 is an equidigital number, since it uses as much as digits as its factorization.

65238428573 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 9676800, while the sum is 53.

The spelling of 65238428573 in words is "sixty-five billion, two hundred thirty-eight million, four hundred twenty-eight thousand, five hundred seventy-three".