20403333243101 has 4 divisors (see below), whose sum is σ = 20438694306492. Its totient is φ = 20367972179712.

The previous prime is 20403333243071. The next prime is 20403333243151. The reversal of 20403333243101 is 10134233330402.

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 10210414999876 + 10192918243225 = 3195374^2 + 3192635^2 .

It is a cyclic number.

It is not a de Polignac number, because 20403333243101 - 2³⁴ = 20386153373917 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20403333243151) 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, 17680530830 + ... + 17680531983.

It is an arithmetic number, because the mean of its divisors is an integer number (5109673576623).

Almost surely, 2^{20403333243101} is an apocalyptic number.

It is an amenable number.

20403333243101 is a deficient number, since it is larger than the sum of its proper divisors (35361063391).

20403333243101 is an equidigital number, since it uses as much as digits as its factorization.

20403333243101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35361063390.

The product of its (nonzero) digits is 15552, while the sum is 29.

Adding to 20403333243101 its reverse (10134233330402), we get a palindrome (30537566573503).

The spelling of 20403333243101 in words is "twenty trillion, four hundred three billion, three hundred thirty-three million, two hundred forty-three thousand, one hundred one".