5666212606129 has 2 divisors, whose sum is σ = 5666212606130. Its totient is φ = 5666212606128.

The previous prime is 5666212606123. The next prime is 5666212606157. The reversal of 5666212606129 is 9216062126665.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5610374916129 + 55837690000 = 2368623^2 + 236300^2 .

It is a cyclic number.

It is not a de Polignac number, because 5666212606129 - 2³ = 5666212606121 is a prime.

It is not a weakly prime, because it can be changed into another prime (5666212606121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2833106303064 + 2833106303065.

It is an arithmetic number, because the mean of its divisors is an integer number (2833106303065).

Almost surely, 2^{5666212606129} is an apocalyptic number.

It is an amenable number.

5666212606129 is a deficient number, since it is larger than the sum of its proper divisors (1).

5666212606129 is an equidigital number, since it uses as much as digits as its factorization.

5666212606129 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2799360, while the sum is 52.

The spelling of 5666212606129 in words is "five trillion, six hundred sixty-six billion, two hundred twelve million, six hundred six thousand, one hundred twenty-nine".