411185705681 has 2 divisors, whose sum is σ = 411185705682. Its totient is φ = 411185705680.

The previous prime is 411185705669. The next prime is 411185705761. The reversal of 411185705681 is 186507581114.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 367987824400 + 43197881281 = 606620^2 + 207841^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-411185705681 is a prime.

It is a super-2 number, since 2×411185705681² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (411185705611) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 205592852840 + 205592852841.

It is an arithmetic number, because the mean of its divisors is an integer number (205592852841).

Almost surely, 2^411185705681 is an apocalyptic number.

It is an amenable number.

411185705681 is a deficient number, since it is larger than the sum of its proper divisors (1).

411185705681 is an equidigital number, since it uses as much as digits as its factorization.

411185705681 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 268800, while the sum is 47.

The spelling of 411185705681 in words is "four hundred eleven billion, one hundred eighty-five million, seven hundred five thousand, six hundred eighty-one".