20434432223 has 8 divisors (see below), whose sum is σ = 21112871040. Its totient is φ = 19757197440.

The previous prime is 20434432219. The next prime is 20434432253. The reversal of 20434432223 is 32223443402.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20434432223 - 2² = 20434432219 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20434432253) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 266438 + ... + 334451.

It is an arithmetic number, because the mean of its divisors is an integer number (2639108880).

Almost surely, 2^20434432223 is an apocalyptic number.

20434432223 is a deficient number, since it is larger than the sum of its proper divisors (678438817).

20434432223 is a wasteful number, since it uses less digits than its factorization.

20434432223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 602017.

The product of its (nonzero) digits is 27648, while the sum is 29.

Adding to 20434432223 its reverse (32223443402), we get a palindrome (52657875625).

The spelling of 20434432223 in words is "twenty billion, four hundred thirty-four million, four hundred thirty-two thousand, two hundred twenty-three".