40505045593 has 2 divisors, whose sum is σ = 40505045594. Its totient is φ = 40505045592.

The previous prime is 40505045467. The next prime is 40505045629. The reversal of 40505045593 is 39554050504.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 39665900569 + 839145024 = 199163^2 + 28968^2 .

It is a cyclic number.

It is not a de Polignac number, because 40505045593 - 2²⁵ = 40471491161 is a prime.

It is not a weakly prime, because it can be changed into another prime (40505445593) 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, 20252522796 + 20252522797.

It is an arithmetic number, because the mean of its divisors is an integer number (20252522797).

Almost surely, 2^40505045593 is an apocalyptic number.

It is an amenable number.

40505045593 is a deficient number, since it is larger than the sum of its proper divisors (1).

40505045593 is an equidigital number, since it uses as much as digits as its factorization.

40505045593 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 270000, while the sum is 40.

The spelling of 40505045593 in words is "forty billion, five hundred five million, forty-five thousand, five hundred ninety-three".