144220135469 has 2 divisors, whose sum is σ = 144220135470. Its totient is φ = 144220135468.

The previous prime is 144220135447. The next prime is 144220135483. The reversal of 144220135469 is 964531022441.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 93383414569 + 50836720900 = 305587^2 + 225470^2 .

It is a cyclic number.

It is not a de Polignac number, because 144220135469 - 2¹² = 144220131373 is a prime.

It is a super-2 number, since 2×144220135469² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (144220134469) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72110067734 + 72110067735.

It is an arithmetic number, because the mean of its divisors is an integer number (72110067735).

Almost surely, 2^144220135469 is an apocalyptic number.

It is an amenable number.

144220135469 is a deficient number, since it is larger than the sum of its proper divisors (1).

144220135469 is an equidigital number, since it uses as much as digits as its factorization.

144220135469 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 207360, while the sum is 41.

The spelling of 144220135469 in words is "one hundred forty-four billion, two hundred twenty million, one hundred thirty-five thousand, four hundred sixty-nine".