20434204111 has 8 divisors (see below), whose sum is σ = 21562230240. Its totient is φ = 19326143232.

The previous prime is 20434204103. The next prime is 20434204183. The reversal of 20434204111 is 11140243402.

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 20434204111 - 2³ = 20434204103 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 (20434204211) 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, 4989210 + ... + 4993303.

It is an arithmetic number, because the mean of its divisors is an integer number (2695278780).

Almost surely, 2^20434204111 is an apocalyptic number.

20434204111 is a deficient number, since it is larger than the sum of its proper divisors (1128026129).

20434204111 is an equidigital number, since it uses as much as digits as its factorization.

20434204111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9982625.

The product of its (nonzero) digits is 768, while the sum is 22.

Adding to 20434204111 its reverse (11140243402), we get a palindrome (31574447513).

The spelling of 20434204111 in words is "twenty billion, four hundred thirty-four million, two hundred four thousand, one hundred eleven".