20435016223 has 4 divisors (see below), whose sum is σ = 20565175720. Its totient is φ = 20304856728.

The previous prime is 20435016221. The next prime is 20435016229. The reversal of 20435016223 is 32261053402.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 20435016223 - 2¹ = 20435016221 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20435016191 and 20435016200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20435016221) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 65079513 + ... + 65079826.

It is an arithmetic number, because the mean of its divisors is an integer number (5141293930).

Almost surely, 2^20435016223 is an apocalyptic number.

20435016223 is a deficient number, since it is larger than the sum of its proper divisors (130159497).

20435016223 is a wasteful number, since it uses less digits than its factorization.

20435016223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 130159496.

The product of its (nonzero) digits is 8640, while the sum is 28.

Adding to 20435016223 its reverse (32261053402), we get a palindrome (52696069625).

The spelling of 20435016223 in words is "twenty billion, four hundred thirty-five million, sixteen thousand, two hundred twenty-three".