144354499981 has 2 divisors, whose sum is σ = 144354499982. Its totient is φ = 144354499980.

The previous prime is 144354499973. The next prime is 144354500011. The reversal of 144354499981 is 189994453441.

144354499981 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 115130597481 + 29223902500 = 339309^2 + 170950^2 .

It is a cyclic number.

It is not a de Polignac number, because 144354499981 - 2³ = 144354499973 is a prime.

It is a super-2 number, since 2×144354499981² (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 (144354199981) 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, 72177249990 + 72177249991.

It is an arithmetic number, because the mean of its divisors is an integer number (72177249991).

Almost surely, 2^144354499981 is an apocalyptic number.

It is an amenable number.

144354499981 is a deficient number, since it is larger than the sum of its proper divisors (1).

144354499981 is an equidigital number, since it uses as much as digits as its factorization.

144354499981 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 22394880, while the sum is 61.

The spelling of 144354499981 in words is "one hundred forty-four billion, three hundred fifty-four million, four hundred ninety-nine thousand, nine hundred eighty-one".