40041365173 has 2 divisors, whose sum is σ = 40041365174. Its totient is φ = 40041365172.

The previous prime is 40041365159. The next prime is 40041365179. The reversal of 40041365173 is 37156314004.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 35985331204 + 4056033969 = 189698^2 + 63687^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40041365173 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40041365179) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20020682586 + 20020682587.

It is an arithmetic number, because the mean of its divisors is an integer number (20020682587).

Almost surely, 2^40041365173 is an apocalyptic number.

It is an amenable number.

40041365173 is a deficient number, since it is larger than the sum of its proper divisors (1).

40041365173 is an equidigital number, since it uses as much as digits as its factorization.

40041365173 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 30240, while the sum is 34.

Adding to 40041365173 its reverse (37156314004), we get a palindrome (77197679177).

The spelling of 40041365173 in words is "forty billion, forty-one million, three hundred sixty-five thousand, one hundred seventy-three".