1659023856953 has 2 divisors, whose sum is σ = 1659023856954. Its totient is φ = 1659023856952.

The previous prime is 1659023856937. The next prime is 1659023857027. The reversal of 1659023856953 is 3596583209561.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1572909780649 + 86114076304 = 1254157^2 + 293452^2 .

It is a cyclic number.

It is not a de Polignac number, because 1659023856953 - 2⁴ = 1659023856937 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (1659023856053) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 829511928476 + 829511928477.

It is an arithmetic number, because the mean of its divisors is an integer number (829511928477).

Almost surely, 2^{1659023856953} is an apocalyptic number.

It is an amenable number.

1659023856953 is a deficient number, since it is larger than the sum of its proper divisors (1).

1659023856953 is an equidigital number, since it uses as much as digits as its factorization.

1659023856953 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 52488000, while the sum is 62.

The spelling of 1659023856953 in words is "one trillion, six hundred fifty-nine billion, twenty-three million, eight hundred fifty-six thousand, nine hundred fifty-three".