144322565487281 has 2 divisors, whose sum is σ = 144322565487282. Its totient is φ = 144322565487280.

The previous prime is 144322565487239. The next prime is 144322565487349. The reversal of 144322565487281 is 182784565223441.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 143397152271025 + 925413216256 = 11974855^2 + 961984^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-144322565487281 is a prime.

It is a super-3 number, since 3×144322565487281³ (a number of 43 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not a weakly prime, because it can be changed into another prime (144322565487211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72161282743640 + 72161282743641.

It is an arithmetic number, because the mean of its divisors is an integer number (72161282743641).

Almost surely, 2^{144322565487281} is an apocalyptic number.

It is an amenable number.

144322565487281 is a deficient number, since it is larger than the sum of its proper divisors (1).

144322565487281 is an equidigital number, since it uses as much as digits as its factorization.

144322565487281 is an evil number, because the sum of its binary digits is even.

The product of its digits is 103219200, while the sum is 62.

The spelling of 144322565487281 in words is "one hundred forty-four trillion, three hundred twenty-two billion, five hundred sixty-five million, four hundred eighty-seven thousand, two hundred eighty-one".