20450042420223 has 24 divisors (see below), whose sum is σ = 31079478996480. Its totient is φ = 11922291931680.

The previous prime is 20450042420221. The next prime is 20450042420287. The reversal of 20450042420223 is 32202424005402.

It is not a de Polignac number, because 20450042420223 - 2¹ = 20450042420221 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20450042420221) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1061447983 + ... + 1061467248.

It is an arithmetic number, because the mean of its divisors is an integer number (1294978291520).

Almost surely, 2^{20450042420223} is an apocalyptic number.

20450042420223 is a deficient number, since it is larger than the sum of its proper divisors (10629436576257).

20450042420223 is a wasteful number, since it uses less digits than its factorization.

20450042420223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2122915279 (or 2122915266 counting only the distinct ones).

The product of its (nonzero) digits is 30720, while the sum is 30.

Adding to 20450042420223 its reverse (32202424005402), we get a palindrome (52652466425625).

The spelling of 20450042420223 in words is "twenty trillion, four hundred fifty billion, forty-two million, four hundred twenty thousand, two hundred twenty-three".