40115772505717 has 2 divisors, whose sum is σ = 40115772505718. Its totient is φ = 40115772505716.

The previous prime is 40115772505691. The next prime is 40115772505769. The reversal of 40115772505717 is 71750527751104.

It is an a-pointer prime, because the next prime (40115772505769) can be obtained adding 40115772505717 to its sum of digits (52).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 33485966330436 + 6629806175281 = 5786706^2 + 2574841^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40115772505717 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40115772505117) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20057886252858 + 20057886252859.

It is an arithmetic number, because the mean of its divisors is an integer number (20057886252859).

Almost surely, 2^{40115772505717} is an apocalyptic number.

It is an amenable number.

40115772505717 is a deficient number, since it is larger than the sum of its proper divisors (1).

40115772505717 is an equidigital number, since it uses as much as digits as its factorization.

40115772505717 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2401000, while the sum is 52.

The spelling of 40115772505717 in words is "forty trillion, one hundred fifteen billion, seven hundred seventy-two million, five hundred five thousand, seven hundred seventeen".