259855206966853 has 2 divisors, whose sum is σ = 259855206966854. Its totient is φ = 259855206966852.

The previous prime is 259855206966769. The next prime is 259855206966863. The reversal of 259855206966853 is 358669602558952.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 214247565291204 + 45607641675649 = 14637198^2 + 6753343^2 .

It is a cyclic number.

It is not a de Polignac number, because 259855206966853 - 2¹⁷ = 259855206835781 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (259855206966863) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 129927603483426 + 129927603483427.

It is an arithmetic number, because the mean of its divisors is an integer number (129927603483427).

Almost surely, 2^{259855206966853} is an apocalyptic number.

It is an amenable number.

259855206966853 is a deficient number, since it is larger than the sum of its proper divisors (1).

259855206966853 is an equidigital number, since it uses as much as digits as its factorization.

259855206966853 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8398080000, while the sum is 79.

The spelling of 259855206966853 in words is "two hundred fifty-nine trillion, eight hundred fifty-five billion, two hundred six million, nine hundred sixty-six thousand, eight hundred fifty-three".