208336014649 has 6 divisors (see below), whose sum is σ = 242350057914. Its totient is φ = 178573726800.

The previous prime is 208336014641. The next prime is 208336014659. The reversal of 208336014649 is 946410633802.

It can be written as a sum of positive squares in only one way, i.e., 197574027049 + 10761987600 = 444493^2 + 103740^2 .

It is not a de Polignac number, because 208336014649 - 2³ = 208336014641 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 208336014599 and 208336014608.

It is not an unprimeable number, because it can be changed into a prime (208336014641) 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 in 5 ways as a sum of consecutive naturals, for example, 2125877652 + ... + 2125877749.

It is an arithmetic number, because the mean of its divisors is an integer number (40391676319).

Almost surely, 2^208336014649 is an apocalyptic number.

It is an amenable number.

208336014649 is a deficient number, since it is larger than the sum of its proper divisors (34014043265).

208336014649 is an equidigital number, since it uses as much as digits as its factorization.

208336014649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4251755415 (or 4251755408 counting only the distinct ones).

The product of its (nonzero) digits is 746496, while the sum is 46.

The spelling of 208336014649 in words is "two hundred eight billion, three hundred thirty-six million, fourteen thousand, six hundred forty-nine".