40440602267509 has 2 divisors, whose sum is σ = 40440602267510. Its totient is φ = 40440602267508.

The previous prime is 40440602267503. The next prime is 40440602267579. The reversal of 40440602267509 is 90576220604404.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 25678846804900 + 14761755462609 = 5067430^2 + 3842103^2 .

It is a cyclic number.

It is not a de Polignac number, because 40440602267509 - 2¹¹ = 40440602265461 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40440602267503) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20220301133754 + 20220301133755.

It is an arithmetic number, because the mean of its divisors is an integer number (20220301133755).

Almost surely, 2^{40440602267509} is an apocalyptic number.

It is an amenable number.

40440602267509 is a deficient number, since it is larger than the sum of its proper divisors (1).

40440602267509 is an equidigital number, since it uses as much as digits as its factorization.

40440602267509 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2903040, while the sum is 49.

The spelling of 40440602267509 in words is "forty trillion, four hundred forty billion, six hundred two million, two hundred sixty-seven thousand, five hundred nine".