208620380636 has 12 divisors (see below), whose sum is σ = 380958956112. Its totient is φ = 99774964608.

The previous prime is 208620380629. The next prime is 208620380651. The reversal of 208620380636 is 636083026802.

It is a happy number.

208620380636 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

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, 1133806325 + ... + 1133806508.

It is an arithmetic number, because the mean of its divisors is an integer number (31746579676).

Almost surely, 2^208620380636 is an apocalyptic number.

It is an amenable number.

208620380636 is a deficient number, since it is larger than the sum of its proper divisors (172338575476).

208620380636 is a wasteful number, since it uses less digits than its factorization.

208620380636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2267612860 (or 2267612858 counting only the distinct ones).

The product of its (nonzero) digits is 497664, while the sum is 44.

The spelling of 208620380636 in words is "two hundred eight billion, six hundred twenty million, three hundred eighty thousand, six hundred thirty-six".