66256140043211 has 2 divisors, whose sum is σ = 66256140043212. Its totient is φ = 66256140043210.

The previous prime is 66256140043187. The next prime is 66256140043277. The reversal of 66256140043211 is 11234004165266.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 66256140043211 - 2¹⁰ = 66256140042187 is a prime.

It is not a weakly prime, because it can be changed into another prime (66256140043411) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33128070021605 + 33128070021606.

It is an arithmetic number, because the mean of its divisors is an integer number (33128070021606).

Almost surely, 2^{66256140043211} is an apocalyptic number.

66256140043211 is a deficient number, since it is larger than the sum of its proper divisors (1).

66256140043211 is an equidigital number, since it uses as much as digits as its factorization.

66256140043211 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 41.

The spelling of 66256140043211 in words is "sixty-six trillion, two hundred fifty-six billion, one hundred forty million, forty-three thousand, two hundred eleven".