208508337086113 has 2 divisors, whose sum is σ = 208508337086114. Its totient is φ = 208508337086112.

The previous prime is 208508337086099. The next prime is 208508337086183. The reversal of 208508337086113 is 311680733805802.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 198930939986944 + 9577397099169 = 14104288^2 + 3094737^2 .

It is a cyclic number.

It is not a de Polignac number, because 208508337086113 - 2³⁷ = 208370898132641 is a prime.

It is a super-2 number, since 2×208508337086113² (a number of 29 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (208508337086183) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 104254168543056 + 104254168543057.

It is an arithmetic number, because the mean of its divisors is an integer number (104254168543057).

Almost surely, 2^{208508337086113} is an apocalyptic number.

It is an amenable number.

208508337086113 is a deficient number, since it is larger than the sum of its proper divisors (1).

208508337086113 is an equidigital number, since it uses as much as digits as its factorization.

208508337086113 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5806080, while the sum is 55.

The spelling of 208508337086113 in words is "two hundred eight trillion, five hundred eight billion, three hundred thirty-seven million, eighty-six thousand, one hundred thirteen".