20413243333 has 4 divisors (see below), whose sum is σ = 23329420960. Its totient is φ = 17497065708.

The previous prime is 20413243283. The next prime is 20413243339. The reversal of 20413243333 is 33334231402.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 20413243333 - 2¹⁷ = 20413112261 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 (20413243339) 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, 1458088803 + ... + 1458088816.

It is an arithmetic number, because the mean of its divisors is an integer number (5832355240).

Almost surely, 2^20413243333 is an apocalyptic number.

It is an amenable number.

20413243333 is a deficient number, since it is larger than the sum of its proper divisors (2916177627).

20413243333 is an equidigital number, since it uses as much as digits as its factorization.

20413243333 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2916177626.

The product of its (nonzero) digits is 15552, while the sum is 28.

Adding to 20413243333 its reverse (33334231402), we get a palindrome (53747474735).

The spelling of 20413243333 in words is "twenty billion, four hundred thirteen million, two hundred forty-three thousand, three hundred thirty-three".