53855538705209 has 2 divisors, whose sum is σ = 53855538705210. Its totient is φ = 53855538705208.

The previous prime is 53855538705167. The next prime is 53855538705257. The reversal of 53855538705209 is 90250783555835.

53855538705209 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 53281649127184 + 573889578025 = 7299428^2 + 757555^2 .

It is a cyclic number.

It is not a de Polignac number, because 53855538705209 - 2¹² = 53855538701113 is a prime.

It is not a weakly prime, because it can be changed into another prime (53855538795209) 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, 26927769352604 + 26927769352605.

It is an arithmetic number, because the mean of its divisors is an integer number (26927769352605).

Almost surely, 2^{53855538705209} is an apocalyptic number.

It is an amenable number.

53855538705209 is a deficient number, since it is larger than the sum of its proper divisors (1).

53855538705209 is an equidigital number, since it uses as much as digits as its factorization.

53855538705209 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 226800000, while the sum is 65.

The spelling of 53855538705209 in words is "fifty-three trillion, eight hundred fifty-five billion, five hundred thirty-eight million, seven hundred five thousand, two hundred nine".