66105553035611 has 2 divisors, whose sum is σ = 66105553035612. Its totient is φ = 66105553035610.

The previous prime is 66105553035589. The next prime is 66105553035619. The reversal of 66105553035611 is 11653035550166.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-66105553035611 is a prime.

It is not a weakly prime, because it can be changed into another prime (66105553035619) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33052776517805 + 33052776517806.

It is an arithmetic number, because the mean of its divisors is an integer number (33052776517806).

Almost surely, 2^{66105553035611} is an apocalyptic number.

66105553035611 is a deficient number, since it is larger than the sum of its proper divisors (1).

66105553035611 is an equidigital number, since it uses as much as digits as its factorization.

66105553035611 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1215000, while the sum is 47.

Adding to 66105553035611 its reverse (11653035550166), we get a palindrome (77758588585777).

The spelling of 66105553035611 in words is "sixty-six trillion, one hundred five billion, five hundred fifty-three million, thirty-five thousand, six hundred eleven".