53617070209 has 2 divisors, whose sum is σ = 53617070210. Its totient is φ = 53617070208.

The previous prime is 53617070207. The next prime is 53617070257. The reversal of 53617070209 is 90207071635.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 41133924225 + 12483145984 = 202815^2 + 111728^2 .

It is a cyclic number.

It is not a de Polignac number, because 53617070209 - 2¹ = 53617070207 is a prime.

Together with 53617070207, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (53617070201) 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, 26808535104 + 26808535105.

It is an arithmetic number, because the mean of its divisors is an integer number (26808535105).

Almost surely, 2^53617070209 is an apocalyptic number.

It is an amenable number.

53617070209 is a deficient number, since it is larger than the sum of its proper divisors (1).

53617070209 is an equidigital number, since it uses as much as digits as its factorization.

53617070209 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 79380, while the sum is 40.

The spelling of 53617070209 in words is "fifty-three billion, six hundred seventeen million, seventy thousand, two hundred nine".