243545502220 has 12 divisors (see below), whose sum is σ = 511445554704. Its totient is φ = 97418200880.

The previous prime is 243545502191. The next prime is 243545502247. The reversal of 243545502220 is 22205545342.

It is a super-3 number, since 3×243545502220³ (a number of 35 digits) contains 333 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6088637536 + ... + 6088637575.

It is an arithmetic number, because the mean of its divisors is an integer number (42620462892).

Almost surely, 2^243545502220 is an apocalyptic number.

243545502220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

243545502220 is an abundant number, since it is smaller than the sum of its proper divisors (267900052484).

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

243545502220 is a wasteful number, since it uses less digits than its factorization.

243545502220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12177275120 (or 12177275118 counting only the distinct ones).

The product of its (nonzero) digits is 96000, while the sum is 34.

The spelling of 243545502220 in words is "two hundred forty-three billion, five hundred forty-five million, five hundred two thousand, two hundred twenty".