206868881420 has 12 divisors (see below), whose sum is σ = 434424651024. Its totient is φ = 82747552560.

The previous prime is 206868881419. The next prime is 206868881491. The reversal of 206868881420 is 24188868602.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5171722016 + ... + 5171722055.

It is an arithmetic number, because the mean of its divisors is an integer number (36202054252).

Almost surely, 2^206868881420 is an apocalyptic number.

206868881420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

206868881420 is an abundant number, since it is smaller than the sum of its proper divisors (227555769604).

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

206868881420 is a wasteful number, since it uses less digits than its factorization.

206868881420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10343444080 (or 10343444078 counting only the distinct ones).

The product of its (nonzero) digits is 2359296, while the sum is 53.

The spelling of 206868881420 in words is "two hundred six billion, eight hundred sixty-eight million, eight hundred eighty-one thousand, four hundred twenty".