144970721309 has 2 divisors, whose sum is σ = 144970721310. Its totient is φ = 144970721308.

The previous prime is 144970721263. The next prime is 144970721317. The reversal of 144970721309 is 903127079441.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 142880220025 + 2090501284 = 377995^2 + 45722^2 .

It is an emirp because it is prime and its reverse (903127079441) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 144970721309 - 2²⁸ = 144702285853 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (144970721369) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72485360654 + 72485360655.

It is an arithmetic number, because the mean of its divisors is an integer number (72485360655).

Almost surely, 2^144970721309 is an apocalyptic number.

It is an amenable number.

144970721309 is a deficient number, since it is larger than the sum of its proper divisors (1).

144970721309 is an equidigital number, since it uses as much as digits as its factorization.

144970721309 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 381024, while the sum is 47.

The spelling of 144970721309 in words is "one hundred forty-four billion, nine hundred seventy million, seven hundred twenty-one thousand, three hundred nine".