20413333213 has 20 divisors (see below), whose sum is σ = 25646034428. Its totient is φ = 16151184000.

The previous prime is 20413333211. The next prime is 20413333223. The reversal of 20413333213 is 31233331402.

It can be written as a sum of positive squares in 2 ways, for example, as 6560514009 + 13852819204 = 80997^2 + 117698^2 .

It is not a de Polignac number, because 20413333213 - 2¹ = 20413333211 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20413333211) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 295788 + ... + 358213.

Almost surely, 2^20413333213 is an apocalyptic number.

It is an amenable number.

20413333213 is a deficient number, since it is larger than the sum of its proper divisors (5232701215).

20413333213 is an frugal number, since it uses more digits than its factorization.

20413333213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 654042 (or 654021 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 25.

Adding to 20413333213 its reverse (31233331402), we get a palindrome (51646664615).

The spelling of 20413333213 in words is "twenty billion, four hundred thirteen million, three hundred thirty-three thousand, two hundred thirteen".