40165717169009 has 2 divisors, whose sum is σ = 40165717169010. Its totient is φ = 40165717169008.

The previous prime is 40165717168949. The next prime is 40165717169027. The reversal of 40165717169009 is 90096171756104.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 28237480071025 + 11928237097984 = 5313895^2 + 3453728^2 .

It is a cyclic number.

It is not a de Polignac number, because 40165717169009 - 2⁴⁴ = 22573531124593 is a prime.

It is a super-2 number, since 2×40165717169009² (a number of 28 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (40165717169089) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20082858584504 + 20082858584505.

It is an arithmetic number, because the mean of its divisors is an integer number (20082858584505).

Almost surely, 2^{40165717169009} is an apocalyptic number.

It is an amenable number.

40165717169009 is a deficient number, since it is larger than the sum of its proper divisors (1).

40165717169009 is an equidigital number, since it uses as much as digits as its factorization.

40165717169009 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2857680, while the sum is 56.

The spelling of 40165717169009 in words is "forty trillion, one hundred sixty-five billion, seven hundred seventeen million, one hundred sixty-nine thousand, nine".