40252408717 has 2 divisors, whose sum is σ = 40252408718. Its totient is φ = 40252408716.

The previous prime is 40252408667. The next prime is 40252408741. The reversal of 40252408717 is 71780425204.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 31127192041 + 9125216676 = 176429^2 + 95526^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40252408717 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 40252408717.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40252408787) 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, 20126204358 + 20126204359.

It is an arithmetic number, because the mean of its divisors is an integer number (20126204359).

Almost surely, 2^40252408717 is an apocalyptic number.

It is an amenable number.

40252408717 is a deficient number, since it is larger than the sum of its proper divisors (1).

40252408717 is an equidigital number, since it uses as much as digits as its factorization.

40252408717 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 125440, while the sum is 40.

The spelling of 40252408717 in words is "forty billion, two hundred fifty-two million, four hundred eight thousand, seven hundred seventeen".