40163634005809 has 2 divisors, whose sum is σ = 40163634005810. Its totient is φ = 40163634005808.

The previous prime is 40163634005741. The next prime is 40163634005827. The reversal of 40163634005809 is 90850043636104.

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., 26394317251600 + 13769316754209 = 5137540^2 + 3710703^2 .

It is a cyclic number.

It is not a de Polignac number, because 40163634005809 - 2⁷ = 40163634005681 is a prime.

It is a super-2 number, since 2×40163634005809² (a number of 28 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (40163634005849) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20081817002904 + 20081817002905.

It is an arithmetic number, because the mean of its divisors is an integer number (20081817002905).

Almost surely, 2^{40163634005809} is an apocalyptic number.

It is an amenable number.

40163634005809 is a deficient number, since it is larger than the sum of its proper divisors (1).

40163634005809 is an equidigital number, since it uses as much as digits as its factorization.

40163634005809 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1866240, while the sum is 49.

The spelling of 40163634005809 in words is "forty trillion, one hundred sixty-three billion, six hundred thirty-four million, five thousand, eight hundred nine".