20145023223 has 16 divisors (see below), whose sum is σ = 28932169056. Its totient is φ = 12394373760.

The previous prime is 20145023207. The next prime is 20145023237. The reversal of 20145023223 is 32232054102.

It is not a de Polignac number, because 20145023223 - 2⁴ = 20145023207 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20145023193 and 20145023202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20145023323) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 147133 + ... + 248873.

It is an arithmetic number, because the mean of its divisors is an integer number (1808260566).

Almost surely, 2^20145023223 is an apocalyptic number.

20145023223 is a deficient number, since it is larger than the sum of its proper divisors (8787145833).

20145023223 is a wasteful number, since it uses less digits than its factorization.

20145023223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106834.

The product of its (nonzero) digits is 2880, while the sum is 24.

Adding to 20145023223 its reverse (32232054102), we get a palindrome (52377077325).

The spelling of 20145023223 in words is "twenty billion, one hundred forty-five million, twenty-three thousand, two hundred twenty-three".