20413444303213 has 4 divisors (see below), whose sum is σ = 21983709249628. Its totient is φ = 18843179356800.

The previous prime is 20413444303211. The next prime is 20413444303247. The reversal of 20413444303213 is 31230344431402.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 10046345142409 + 10367099160804 = 3169597^2 + 3219798^2 .

It is a cyclic number.

It is not a de Polignac number, because 20413444303213 - 2¹ = 20413444303211 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20413444303211) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 785132473188 + ... + 785132473213.

It is an arithmetic number, because the mean of its divisors is an integer number (5495927312407).

Almost surely, 2^{20413444303213} is an apocalyptic number.

It is an amenable number.

20413444303213 is a deficient number, since it is larger than the sum of its proper divisors (1570264946415).

20413444303213 is a wasteful number, since it uses less digits than its factorization.

20413444303213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1570264946414.

The product of its (nonzero) digits is 82944, while the sum is 34.

Adding to 20413444303213 its reverse (31230344431402), we get a palindrome (51643788734615).

The spelling of 20413444303213 in words is "twenty trillion, four hundred thirteen billion, four hundred forty-four million, three hundred three thousand, two hundred thirteen".