6661116101063 has 2 divisors, whose sum is σ = 6661116101064. Its totient is φ = 6661116101062.

The previous prime is 6661116101051. The next prime is 6661116101117. The reversal of 6661116101063 is 3601016111666.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 6661116101063 - 2²⁸ = 6660847665607 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6661116103063) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3330558050531 + 3330558050532.

It is an arithmetic number, because the mean of its divisors is an integer number (3330558050532).

Almost surely, 2^{6661116101063} is an apocalyptic number.

6661116101063 is a deficient number, since it is larger than the sum of its proper divisors (1).

6661116101063 is an equidigital number, since it uses as much as digits as its factorization.

6661116101063 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 23328, while the sum is 38.

The spelling of 6661116101063 in words is "six trillion, six hundred sixty-one billion, one hundred sixteen million, one hundred one thousand, sixty-three".