140443639009 has 2 divisors, whose sum is σ = 140443639010. Its totient is φ = 140443639008.

The previous prime is 140443638997. The next prime is 140443639019. The reversal of 140443639009 is 900936344041.

140443639009 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 77783536609 + 62660102400 = 278897^2 + 250320^2 .

It is a cyclic number.

It is not a de Polignac number, because 140443639009 - 2²¹ = 140441541857 is a prime.

It is not a weakly prime, because it can be changed into another prime (140443639019) 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, 70221819504 + 70221819505.

It is an arithmetic number, because the mean of its divisors is an integer number (70221819505).

Almost surely, 2^140443639009 is an apocalyptic number.

It is an amenable number.

140443639009 is a deficient number, since it is larger than the sum of its proper divisors (1).

140443639009 is an equidigital number, since it uses as much as digits as its factorization.

140443639009 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 279936, while the sum is 43.

The spelling of 140443639009 in words is "one hundred forty billion, four hundred forty-three million, six hundred thirty-nine thousand, nine".