208238664513 has 8 divisors (see below), whose sum is σ = 302892602976. Its totient is φ = 126205251200.

The previous prime is 208238664449. The next prime is 208238664533. The reversal of 208238664513 is 315466832802.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 208238664513 - 2⁶ = 208238664449 is a prime.

It is not an unprimeable number, because it can be changed into a prime (208238664533) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3155131248 + ... + 3155131313.

It is an arithmetic number, because the mean of its divisors is an integer number (37861575372).

Almost surely, 2^208238664513 is an apocalyptic number.

It is an amenable number.

208238664513 is a deficient number, since it is larger than the sum of its proper divisors (94653938463).

208238664513 is a wasteful number, since it uses less digits than its factorization.

208238664513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6310262575.

The product of its (nonzero) digits is 1658880, while the sum is 48.

The spelling of 208238664513 in words is "two hundred eight billion, two hundred thirty-eight million, six hundred sixty-four thousand, five hundred thirteen".