41313781217 has 2 divisors, whose sum is σ = 41313781218. Its totient is φ = 41313781216.

The previous prime is 41313781193. The next prime is 41313781291. The reversal of 41313781217 is 71218731314.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 41310156001 + 3625216 = 203249^2 + 1904^2 .

It is a cyclic number.

It is not a de Polignac number, because 41313781217 - 2⁶ = 41313781153 is a prime.

It is a super-2 number, since 2×41313781217² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (41313781297) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20656890608 + 20656890609.

It is an arithmetic number, because the mean of its divisors is an integer number (20656890609).

Almost surely, 2^41313781217 is an apocalyptic number.

It is an amenable number.

41313781217 is a deficient number, since it is larger than the sum of its proper divisors (1).

41313781217 is an equidigital number, since it uses as much as digits as its factorization.

41313781217 is an evil number, because the sum of its binary digits is even.

The product of its digits is 28224, while the sum is 38.

The spelling of 41313781217 in words is "forty-one billion, three hundred thirteen million, seven hundred eighty-one thousand, two hundred seventeen".