20413224243 has 6 divisors (see below), whose sum is σ = 29485768364. Its totient is φ = 13608816156.

The previous prime is 20413224217. The next prime is 20413224253. The reversal of 20413224243 is 34242231402.

20413224243 is a `hidden beast` number, since 2 + 0 + 413 + 2 + 2 + 4 + 243 = 666.

It is not a de Polignac number, because 20413224243 - 2¹⁶ = 20413158707 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20413224253) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1134068005 + ... + 1134068022.

Almost surely, 2^20413224243 is an apocalyptic number.

20413224243 is a deficient number, since it is larger than the sum of its proper divisors (9072544121).

20413224243 is a wasteful number, since it uses less digits than its factorization.

20413224243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2268136033 (or 2268136030 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 27.

Adding to 20413224243 its reverse (34242231402), we get a palindrome (54655455645).

The spelling of 20413224243 in words is "twenty billion, four hundred thirteen million, two hundred twenty-four thousand, two hundred forty-three".