20204223303240 has 96 divisors (see below), whose sum is σ = 69526297858680. Its totient is φ = 5070863886336.

The previous prime is 20204223303193. The next prime is 20204223303241. The reversal of 20204223303240 is 4230332240202.

It is a happy number.

20204223303240 is a `hidden beast` number, since 2 + 0 + 2 + 0 + 4 + 2 + 2 + 330 + 324 + 0 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 16921161969156 + 3283061334084 = 4113534^2 + 1811922^2 .

It is not an unprimeable number, because it can be changed into a prime (20204223303241) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 1650665719 + ... + 1650677958.

Almost surely, 2^{20204223303240} is an apocalyptic number.

20204223303240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20204223303240 is an abundant number, since it is smaller than the sum of its proper divisors (49322074555440).

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

20204223303240 is a wasteful number, since it uses less digits than its factorization.

20204223303240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3301343711 (or 3301343704 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 27.

Adding to 20204223303240 its reverse (4230332240202), we get a palindrome (24434555543442).

The spelling of 20204223303240 in words is "twenty trillion, two hundred four billion, two hundred twenty-three million, three hundred three thousand, two hundred forty".