20004145223 has 2 divisors, whose sum is σ = 20004145224. Its totient is φ = 20004145222.

The previous prime is 20004145211. The next prime is 20004145243. The reversal of 20004145223 is 32254140002.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20004145223 - 2¹⁶ = 20004079687 is a prime.

It is a super-2 number, since 2×20004145223² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20004145243) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10002072611 + 10002072612.

It is an arithmetic number, because the mean of its divisors is an integer number (10002072612).

Almost surely, 2^20004145223 is an apocalyptic number.

20004145223 is a deficient number, since it is larger than the sum of its proper divisors (1).

20004145223 is an equidigital number, since it uses as much as digits as its factorization.

20004145223 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1920, while the sum is 23.

Adding to 20004145223 its reverse (32254140002), we get a palindrome (52258285225).

The spelling of 20004145223 in words is "twenty billion, four million, one hundred forty-five thousand, two hundred twenty-three".