40042624717 has 2 divisors, whose sum is σ = 40042624718. Its totient is φ = 40042624716.

The previous prime is 40042624691. The next prime is 40042624723. The reversal of 40042624717 is 71742624004.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 35333096841 + 4709527876 = 187971^2 + 68626^2 .

It is a cyclic number.

It is not a de Polignac number, because 40042624717 - 2³¹ = 37895141069 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40042624777) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20021312358 + 20021312359.

It is an arithmetic number, because the mean of its divisors is an integer number (20021312359).

Almost surely, 2^40042624717 is an apocalyptic number.

It is an amenable number.

40042624717 is a deficient number, since it is larger than the sum of its proper divisors (1).

40042624717 is an equidigital number, since it uses as much as digits as its factorization.

40042624717 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 75264, while the sum is 37.

The spelling of 40042624717 in words is "forty billion, forty-two million, six hundred twenty-four thousand, seven hundred seventeen".