164245566243047 has 2 divisors, whose sum is σ = 164245566243048. Its totient is φ = 164245566243046.

The previous prime is 164245566243029. The next prime is 164245566243097. The reversal of 164245566243047 is 740342665542461.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 164245566243047 - 2¹⁴ = 164245566226663 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (164245566243007) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82122783121523 + 82122783121524.

It is an arithmetic number, because the mean of its divisors is an integer number (82122783121524).

Almost surely, 2^{164245566243047} is an apocalyptic number.

164245566243047 is a deficient number, since it is larger than the sum of its proper divisors (1).

164245566243047 is an equidigital number, since it uses as much as digits as its factorization.

164245566243047 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 116121600, while the sum is 59.

The spelling of 164245566243047 in words is "one hundred sixty-four trillion, two hundred forty-five billion, five hundred sixty-six million, two hundred forty-three thousand, forty-seven".