6618661105141 has 2 divisors, whose sum is σ = 6618661105142. Its totient is φ = 6618661105140.

The previous prime is 6618661105073. The next prime is 6618661105157. The reversal of 6618661105141 is 1415011668166.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3648825836100 + 2969835269041 = 1910190^2 + 1723321^2 .

It is a cyclic number.

It is not a de Polignac number, because 6618661105141 - 2³¹ = 6616513621493 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 6618661105091 and 6618661105100.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6618661105181) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3309330552570 + 3309330552571.

It is an arithmetic number, because the mean of its divisors is an integer number (3309330552571).

Almost surely, 2^{6618661105141} is an apocalyptic number.

It is an amenable number.

6618661105141 is a deficient number, since it is larger than the sum of its proper divisors (1).

6618661105141 is an equidigital number, since it uses as much as digits as its factorization.

6618661105141 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 207360, while the sum is 46.

The spelling of 6618661105141 in words is "six trillion, six hundred eighteen billion, six hundred sixty-one million, one hundred five thousand, one hundred forty-one".