208208448601 has 4 divisors (see below), whose sum is σ = 208338824932. Its totient is φ = 208078072272.

The previous prime is 208208448541. The next prime is 208208448611. The reversal of 208208448601 is 106844802802.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 134509230025 + 73699218576 = 366755^2 + 271476^2 .

It is a cyclic number.

It is not a de Polignac number, because 208208448601 - 2¹⁷ = 208208317529 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (208208448611) 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 3 ways as a sum of consecutive naturals, for example, 65185770 + ... + 65188963.

It is an arithmetic number, because the mean of its divisors is an integer number (52084706233).

Almost surely, 2^208208448601 is an apocalyptic number.

It is an amenable number.

208208448601 is a deficient number, since it is larger than the sum of its proper divisors (130376331).

208208448601 is a wasteful number, since it uses less digits than its factorization.

208208448601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 130376330.

The product of its (nonzero) digits is 196608, while the sum is 43.

The spelling of 208208448601 in words is "two hundred eight billion, two hundred eight million, four hundred forty-eight thousand, six hundred one".