208820803064 has 16 divisors (see below), whose sum is σ = 393263850600. Its totient is φ = 103950442912.

The previous prime is 208820803021. The next prime is 208820803069. The reversal of 208820803064 is 460308028802.

208820803064 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×208820803064² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (208820803069) 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 3 ways as a sum of consecutive naturals, for example, 57492899 + ... + 57496530.

Almost surely, 2^208820803064 is an apocalyptic number.

It is an amenable number.

208820803064 is a deficient number, since it is larger than the sum of its proper divisors (184443047536).

208820803064 is a wasteful number, since it uses less digits than its factorization.

208820803064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 114989662 (or 114989658 counting only the distinct ones).

The product of its (nonzero) digits is 147456, while the sum is 41.

The spelling of 208820803064 in words is "two hundred eight billion, eight hundred twenty million, eight hundred three thousand, sixty-four".