206255223356 has 96 divisors (see below), whose sum is σ = 447785520000. Its totient is φ = 80946044928.

The previous prime is 206255223341. The next prime is 206255223367. The reversal of 206255223356 is 653322552602.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 54722240 + ... + 54726008.

It is an arithmetic number, because the mean of its divisors is an integer number (4664432500).

Almost surely, 2^206255223356 is an apocalyptic number.

206255223356 is a gapful number since it is divisible by the number (26) 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 206255223356, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (223892760000).

206255223356 is an abundant number, since it is smaller than the sum of its proper divisors (241530296644).

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

206255223356 is a wasteful number, since it uses less digits than its factorization.

206255223356 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4951 (or 4949 counting only the distinct ones).

The product of its (nonzero) digits is 648000, while the sum is 41.

Adding to 206255223356 its reverse (653322552602), we get a palindrome (859577775958).

The spelling of 206255223356 in words is "two hundred six billion, two hundred fifty-five million, two hundred twenty-three thousand, three hundred fifty-six".