20450236044220 has 24 divisors (see below), whose sum is σ = 42945590773008. Its totient is φ = 8180076307200.

The previous prime is 20450236044187. The next prime is 20450236044223. The reversal of 20450236044220 is 2244063205402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20450236044223) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11645355 + ... + 13285885.

It is an arithmetic number, because the mean of its divisors is an integer number (1789399615542).

Almost surely, 2^{20450236044220} is an apocalyptic number.

20450236044220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20450236044220 is an abundant number, since it is smaller than the sum of its proper divisors (22495354728788).

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

20450236044220 is a wasteful number, since it uses less digits than its factorization.

20450236044220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2263821 (or 2263819 counting only the distinct ones).

The product of its (nonzero) digits is 92160, while the sum is 34.

Adding to 20450236044220 its reverse (2244063205402), we get a palindrome (22694299249622).

The spelling of 20450236044220 in words is "twenty trillion, four hundred fifty billion, two hundred thirty-six million, forty-four thousand, two hundred twenty".