41685540168889 has 2 divisors, whose sum is σ = 41685540168890. Its totient is φ = 41685540168888.

The previous prime is 41685540168887. The next prime is 41685540168911. The reversal of 41685540168889 is 98886104558614.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 41129031628864 + 556508540025 = 6413192^2 + 745995^2 .

It is a cyclic number.

It is not a de Polignac number, because 41685540168889 - 2¹ = 41685540168887 is a prime.

Together with 41685540168887, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (41685540168887) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20842770084444 + 20842770084445.

It is an arithmetic number, because the mean of its divisors is an integer number (20842770084445).

Almost surely, 2^{41685540168889} is an apocalyptic number.

It is an amenable number.

41685540168889 is a deficient number, since it is larger than the sum of its proper divisors (1).

41685540168889 is an equidigital number, since it uses as much as digits as its factorization.

41685540168889 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 530841600, while the sum is 73.

The spelling of 41685540168889 in words is "forty-one trillion, six hundred eighty-five billion, five hundred forty million, one hundred sixty-eight thousand, eight hundred eighty-nine".