20604043223 has 2 divisors, whose sum is σ = 20604043224. Its totient is φ = 20604043222.

The previous prime is 20604043183. The next prime is 20604043237. The reversal of 20604043223 is 32234040602.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20604043223 - 2⁸ = 20604042967 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20604043192 and 20604043201.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20604043283) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10302021611 + 10302021612.

It is an arithmetic number, because the mean of its divisors is an integer number (10302021612).

Almost surely, 2^20604043223 is an apocalyptic number.

20604043223 is a deficient number, since it is larger than the sum of its proper divisors (1).

20604043223 is an equidigital number, since it uses as much as digits as its factorization.

20604043223 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6912, while the sum is 26.

Adding to 20604043223 its reverse (32234040602), we get a palindrome (52838083825).

The spelling of 20604043223 in words is "twenty billion, six hundred four million, forty-three thousand, two hundred twenty-three".