220202243550 has 384 divisors, whose sum is σ = 661573370880. Its totient is φ = 53648179200.

The previous prime is 220202243543. The next prime is 220202243609. The reversal of 220202243550 is 55342202022.

220202243550 is a `hidden beast` number, since 2 + 20 + 202 + 2 + 435 + 5 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 109172142 + ... + 109174158.

It is an arithmetic number, because the mean of its divisors is an integer number (1722847320).

Almost surely, 2^220202243550 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 220202243550, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (330786685440).

220202243550 is an abundant number, since it is smaller than the sum of its proper divisors (441371127330).

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

220202243550 is a wasteful number, since it uses less digits than its factorization.

220202243550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2193 (or 2182 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 27.

Adding to 220202243550 its reverse (55342202022), we get a palindrome (275544445572).

The spelling of 220202243550 in words is "two hundred twenty billion, two hundred two million, two hundred forty-three thousand, five hundred fifty".