209583106897 has 2 divisors, whose sum is σ = 209583106898. Its totient is φ = 209583106896.

The previous prime is 209583106861. The next prime is 209583106913. The reversal of 209583106897 is 798601385902.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 173026049296 + 36557057601 = 415964^2 + 191199^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-209583106897 is a prime.

It is not a weakly prime, because it can be changed into another prime (209593106897) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 104791553448 + 104791553449.

It is an arithmetic number, because the mean of its divisors is an integer number (104791553449).

Almost surely, 2^209583106897 is an apocalyptic number.

It is an amenable number.

209583106897 is a deficient number, since it is larger than the sum of its proper divisors (1).

209583106897 is an equidigital number, since it uses as much as digits as its factorization.

209583106897 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6531840, while the sum is 58.

The spelling of 209583106897 in words is "two hundred nine billion, five hundred eighty-three million, one hundred six thousand, eight hundred ninety-seven".