206621462220 has 192 divisors, whose sum is σ = 616264298496. Its totient is φ = 51546378240.

The previous prime is 206621462189. The next prime is 206621462239. The reversal of 206621462220 is 22264126602.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 213672177 + ... + 213673143.

It is an arithmetic number, because the mean of its divisors is an integer number (3209709888).

Almost surely, 2^206621462220 is an apocalyptic number.

206621462220 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 206621462220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (308132149248).

206621462220 is an abundant number, since it is smaller than the sum of its proper divisors (409642836276).

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

206621462220 is a wasteful number, since it uses less digits than its factorization.

206621462220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2040 (or 2038 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 33.

Adding to 206621462220 its reverse (22264126602), we get a palindrome (228885588822).

The spelling of 206621462220 in words is "two hundred six billion, six hundred twenty-one million, four hundred sixty-two thousand, two hundred twenty".