144121664569 has 2 divisors, whose sum is σ = 144121664570. Its totient is φ = 144121664568.

The previous prime is 144121664527. The next prime is 144121664581. The reversal of 144121664569 is 965466121441.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 91090483344 + 53031181225 = 301812^2 + 230285^2 .

It is a cyclic number.

It is not a de Polignac number, because 144121664569 - 2¹⁹ = 144121140281 is a prime.

It is a super-2 number, since 2×144121664569² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (144121664369) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72060832284 + 72060832285.

It is an arithmetic number, because the mean of its divisors is an integer number (72060832285).

Almost surely, 2^144121664569 is an apocalyptic number.

It is an amenable number.

144121664569 is a deficient number, since it is larger than the sum of its proper divisors (1).

144121664569 is an equidigital number, since it uses as much as digits as its factorization.

144121664569 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1244160, while the sum is 49.

The spelling of 144121664569 in words is "one hundred forty-four billion, one hundred twenty-one million, six hundred sixty-four thousand, five hundred sixty-nine".