208266680828 has 24 divisors (see below), whose sum is σ = 365697946992. Its totient is φ = 103781700864.

The previous prime is 208266680813. The next prime is 208266680849. The reversal of 208266680828 is 828086662802.

It is a happy number.

It is a super-2 number, since 2×208266680828² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6619751 + ... + 6651137.

It is an arithmetic number, because the mean of its divisors is an integer number (15237414458).

Almost surely, 2^208266680828 is an apocalyptic number.

It is an amenable number.

208266680828 is a deficient number, since it is larger than the sum of its proper divisors (157431266164).

208266680828 is a wasteful number, since it uses less digits than its factorization.

208266680828 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36941 (or 36939 counting only the distinct ones).

The product of its (nonzero) digits is 7077888, while the sum is 56.

The spelling of 208266680828 in words is "two hundred eight billion, two hundred sixty-six million, six hundred eighty thousand, eight hundred twenty-eight".