20541326233 has 4 divisors (see below), whose sum is σ = 20878069348. Its totient is φ = 20204583120.

The previous prime is 20541326213. The next prime is 20541326251. The reversal of 20541326233 is 33262314502.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 33262314502 = 2 ⋅16631157251.

It can be written as a sum of positive squares in 2 ways, for example, as 1781093209 + 18760233024 = 42203^2 + 136968^2 .

It is a cyclic number.

It is not a de Polignac number, because 20541326233 - 2¹³ = 20541318041 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20541326195 and 20541326204.

It is not an unprimeable number, because it can be changed into a prime (20541326213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 168371466 + ... + 168371587.

It is an arithmetic number, because the mean of its divisors is an integer number (5219517337).

Almost surely, 2^20541326233 is an apocalyptic number.

It is an amenable number.

20541326233 is a deficient number, since it is larger than the sum of its proper divisors (336743115).

20541326233 is an equidigital number, since it uses as much as digits as its factorization.

20541326233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 336743114.

The product of its (nonzero) digits is 25920, while the sum is 31.

The spelling of 20541326233 in words is "twenty billion, five hundred forty-one million, three hundred twenty-six thousand, two hundred thirty-three".