144247428769 has 2 divisors, whose sum is σ = 144247428770. Its totient is φ = 144247428768.

The previous prime is 144247428761. The next prime is 144247428779. The reversal of 144247428769 is 967824742441.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 127726182544 + 16521246225 = 357388^2 + 128535^2 .

It is a cyclic number.

It is not a de Polignac number, because 144247428769 - 2³ = 144247428761 is a prime.

It is a super-2 number, since 2×144247428769² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (144247428761) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72123714384 + 72123714385.

It is an arithmetic number, because the mean of its divisors is an integer number (72123714385).

Almost surely, 2^144247428769 is an apocalyptic number.

It is an amenable number.

144247428769 is a deficient number, since it is larger than the sum of its proper divisors (1).

144247428769 is an equidigital number, since it uses as much as digits as its factorization.

144247428769 is an evil number, because the sum of its binary digits is even.

The product of its digits is 21676032, while the sum is 58.

The spelling of 144247428769 in words is "one hundred forty-four billion, two hundred forty-seven million, four hundred twenty-eight thousand, seven hundred sixty-nine".