40242844660493 has 2 divisors, whose sum is σ = 40242844660494. Its totient is φ = 40242844660492.

The previous prime is 40242844660453. The next prime is 40242844660507. The reversal of 40242844660493 is 39406644824204.

40242844660493 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., 39560854426564 + 681990233929 = 6289742^2 + 825827^2 .

It is a cyclic number.

It is not a de Polignac number, because 40242844660493 - 2⁶ = 40242844660429 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40242844660453) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20121422330246 + 20121422330247.

It is an arithmetic number, because the mean of its divisors is an integer number (20121422330247).

Almost surely, 2^{40242844660493} is an apocalyptic number.

It is an amenable number.

40242844660493 is a deficient number, since it is larger than the sum of its proper divisors (1).

40242844660493 is an equidigital number, since it uses as much as digits as its factorization.

40242844660493 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 31850496, while the sum is 56.

The spelling of 40242844660493 in words is "forty trillion, two hundred forty-two billion, eight hundred forty-four million, six hundred sixty thousand, four hundred ninety-three".