40205063513 has 2 divisors, whose sum is σ = 40205063514. Its totient is φ = 40205063512.

The previous prime is 40205063489. The next prime is 40205063519. The reversal of 40205063513 is 31536050204.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 40205062144 + 1369 = 200512^2 + 37^2 .

It is a cyclic number.

It is not a de Polignac number, because 40205063513 - 2¹⁰ = 40205062489 is a prime.

It is not a weakly prime, because it can be changed into another prime (40205063519) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20102531756 + 20102531757.

It is an arithmetic number, because the mean of its divisors is an integer number (20102531757).

Almost surely, 2^40205063513 is an apocalyptic number.

It is an amenable number.

40205063513 is a deficient number, since it is larger than the sum of its proper divisors (1).

40205063513 is an equidigital number, since it uses as much as digits as its factorization.

40205063513 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10800, while the sum is 29.

The spelling of 40205063513 in words is "forty billion, two hundred five million, sixty-three thousand, five hundred thirteen".