20045323223 has 2 divisors, whose sum is σ = 20045323224. Its totient is φ = 20045323222.

The previous prime is 20045323159. The next prime is 20045323231. The reversal of 20045323223 is 32232354002.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20045323223 - 2⁶ = 20045323159 is a prime.

It is a super-2 number, since 2×20045323223² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20045323192 and 20045323201.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20045323253) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10022661611 + 10022661612.

It is an arithmetic number, because the mean of its divisors is an integer number (10022661612).

Almost surely, 2^20045323223 is an apocalyptic number.

20045323223 is a deficient number, since it is larger than the sum of its proper divisors (1).

20045323223 is an equidigital number, since it uses as much as digits as its factorization.

20045323223 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8640, while the sum is 26.

Adding to 20045323223 its reverse (32232354002), we get a palindrome (52277677225).

The spelling of 20045323223 in words is "twenty billion, forty-five million, three hundred twenty-three thousand, two hundred twenty-three".