6660568650629 has 2 divisors, whose sum is σ = 6660568650630. Its totient is φ = 6660568650628.

The previous prime is 6660568650587. The next prime is 6660568650713. The reversal of 6660568650629 is 9260568650666.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5683885128100 + 976683522529 = 2384090^2 + 988273^2 .

It is a cyclic number.

It is not a de Polignac number, because 6660568650629 - 2⁴⁰ = 5561057022853 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6660568610629) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3330284325314 + 3330284325315.

It is an arithmetic number, because the mean of its divisors is an integer number (3330284325315).

Almost surely, 2^{6660568650629} is an apocalyptic number.

It is an amenable number.

6660568650629 is a deficient number, since it is larger than the sum of its proper divisors (1).

6660568650629 is an equidigital number, since it uses as much as digits as its factorization.

6660568650629 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 167961600, while the sum is 65.

The spelling of 6660568650629 in words is "six trillion, six hundred sixty billion, five hundred sixty-eight million, six hundred fifty thousand, six hundred twenty-nine".