41518555613 has 2 divisors, whose sum is σ = 41518555614. Its totient is φ = 41518555612.

The previous prime is 41518555583. The next prime is 41518555651. The reversal of 41518555613 is 31655581514.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 40976690329 + 541865284 = 202427^2 + 23278^2 .

It is a cyclic number.

It is not a de Polignac number, because 41518555613 - 2¹⁴ = 41518539229 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (41518555213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20759277806 + 20759277807.

It is an arithmetic number, because the mean of its divisors is an integer number (20759277807).

Almost surely, 2^41518555613 is an apocalyptic number.

It is an amenable number.

41518555613 is a deficient number, since it is larger than the sum of its proper divisors (1).

41518555613 is an equidigital number, since it uses as much as digits as its factorization.

41518555613 is an evil number, because the sum of its binary digits is even.

The product of its digits is 360000, while the sum is 44.

The spelling of 41518555613 in words is "forty-one billion, five hundred eighteen million, five hundred fifty-five thousand, six hundred thirteen".