205055669220 has 96 divisors (see below), whose sum is σ = 584862550272. Its totient is φ = 53671231488.

The previous prime is 205055669201. The next prime is 205055669233. The reversal of 205055669220 is 22966550502.

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, 551524 + ... + 845156.

It is an arithmetic number, because the mean of its divisors is an integer number (6092318232).

Almost surely, 2^205055669220 is an apocalyptic number.

205055669220 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 205055669220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (292431275136).

205055669220 is an abundant number, since it is smaller than the sum of its proper divisors (379806881052).

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

205055669220 is a wasteful number, since it uses less digits than its factorization.

205055669220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 293861 (or 293859 counting only the distinct ones).

The product of its (nonzero) digits is 324000, while the sum is 42.

The spelling of 205055669220 in words is "two hundred five billion, fifty-five million, six hundred sixty-nine thousand, two hundred twenty".