20434034105 has 4 divisors (see below), whose sum is σ = 24520840932. Its totient is φ = 16347227280.

The previous prime is 20434034077. The next prime is 20434034161. The reversal of 20434034105 is 50143043402.

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

It can be written as a sum of positive squares in 2 ways, for example, as 2539353664 + 17894680441 = 50392^2 + 133771^2 .

It is not a de Polignac number, because 20434034105 - 2⁸ = 20434033849 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2043403406 + ... + 2043403415.

It is an arithmetic number, because the mean of its divisors is an integer number (6130210233).

Almost surely, 2^20434034105 is an apocalyptic number.

It is an amenable number.

20434034105 is a deficient number, since it is larger than the sum of its proper divisors (4086806827).

20434034105 is an equidigital number, since it uses as much as digits as its factorization.

20434034105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4086806826.

The product of its (nonzero) digits is 5760, while the sum is 26.

Adding to 20434034105 its reverse (50143043402), we get a palindrome (70577077507).

The spelling of 20434034105 in words is "twenty billion, four hundred thirty-four million, thirty-four thousand, one hundred five".