65441566273 has 2 divisors, whose sum is σ = 65441566274. Its totient is φ = 65441566272.

The previous prime is 65441566243. The next prime is 65441566301. The reversal of 65441566273 is 37266514456.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 64572908544 + 868657729 = 254112^2 + 29473^2 .

It is a cyclic number.

It is not a de Polignac number, because 65441566273 - 2⁵ = 65441566241 is a prime.

It is a super-2 number, since 2×65441566273² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (65441566213) 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, 32720783136 + 32720783137.

It is an arithmetic number, because the mean of its divisors is an integer number (32720783137).

Almost surely, 2^65441566273 is an apocalyptic number.

It is an amenable number.

65441566273 is a deficient number, since it is larger than the sum of its proper divisors (1).

65441566273 is an equidigital number, since it uses as much as digits as its factorization.

65441566273 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3628800, while the sum is 49.

The spelling of 65441566273 in words is "sixty-five billion, four hundred forty-one million, five hundred sixty-six thousand, two hundred seventy-three".