208812368140 has 12 divisors (see below), whose sum is σ = 438505973136. Its totient is φ = 83524947248.

The previous prime is 208812368137. The next prime is 208812368147. The reversal of 208812368140 is 41863218802.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (208812368147) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5220309184 + ... + 5220309223.

It is an arithmetic number, because the mean of its divisors is an integer number (36542164428).

Almost surely, 2^208812368140 is an apocalyptic number.

208812368140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

208812368140 is an abundant number, since it is smaller than the sum of its proper divisors (229693604996).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

208812368140 is a wasteful number, since it uses less digits than its factorization.

208812368140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10440618416 (or 10440618414 counting only the distinct ones).

The product of its (nonzero) digits is 147456, while the sum is 43.

The spelling of 208812368140 in words is "two hundred eight billion, eight hundred twelve million, three hundred sixty-eight thousand, one hundred forty".