208197796807 has 16 divisors (see below), whose sum is σ = 279538301952. Its totient is φ = 149752660320.

The previous prime is 208197796777. The next prime is 208197796813. The reversal of 208197796807 is 708697791802.

It is a happy number.

208197796807 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 208197796807 - 2²⁷ = 208063579079 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (208197796207) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 103993903 + ... + 103995904.

It is an arithmetic number, because the mean of its divisors is an integer number (17471143872).

Almost surely, 2^208197796807 is an apocalyptic number.

208197796807 is a deficient number, since it is larger than the sum of its proper divisors (71340505145).

208197796807 is a wasteful number, since it uses less digits than its factorization.

208197796807 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 207989838.

The product of its (nonzero) digits is 21337344, while the sum is 64.

The spelling of 208197796807 in words is "two hundred eight billion, one hundred ninety-seven million, seven hundred ninety-six thousand, eight hundred seven".