206238847920 has 640 divisors, whose sum is σ = 770374502400. Its totient is φ = 45600952320.

The previous prime is 206238847907. The next prime is 206238847939. The reversal of 206238847920 is 29748832602.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 336441534 + ... + 336442146.

It is an arithmetic number, because the mean of its divisors is an integer number (1203710160).

Almost surely, 2^206238847920 is an apocalyptic number.

206238847920 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 206238847920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (385187251200).

206238847920 is an abundant number, since it is smaller than the sum of its proper divisors (564135654480).

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

206238847920 is a wasteful number, since it uses less digits than its factorization.

206238847920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 778 (or 758 counting only the distinct ones).

The product of its (nonzero) digits is 2322432, while the sum is 51.

The spelling of 206238847920 in words is "two hundred six billion, two hundred thirty-eight million, eight hundred forty-seven thousand, nine hundred twenty".