240044357731489 has 2 divisors, whose sum is σ = 240044357731490. Its totient is φ = 240044357731488.

The previous prime is 240044357731487. The next prime is 240044357731501. The reversal of 240044357731489 is 984137753440042.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 160302440323600 + 79741917407889 = 12661060^2 + 8929833^2 .

It is a cyclic number.

It is not a de Polignac number, because 240044357731489 - 2¹ = 240044357731487 is a prime.

Together with 240044357731487, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (240044357731487) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 120022178865744 + 120022178865745.

It is an arithmetic number, because the mean of its divisors is an integer number (120022178865745).

Almost surely, 2^{240044357731489} is an apocalyptic number.

It is an amenable number.

240044357731489 is a deficient number, since it is larger than the sum of its proper divisors (1).

240044357731489 is an equidigital number, since it uses as much as digits as its factorization.

240044357731489 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 81285120, while the sum is 61.

The spelling of 240044357731489 in words is "two hundred forty trillion, forty-four billion, three hundred fifty-seven million, seven hundred thirty-one thousand, four hundred eighty-nine".