20144342205 has 24 divisors (see below), whose sum is σ = 37602773208. Its totient is φ = 9917214336.

The previous prime is 20144342201. The next prime is 20144342227. The reversal of 20144342205 is 50224344102.

20144342205 is a `hidden beast` number, since 2 + 0 + 1 + 4 + 434 + 220 + 5 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 3421197081 + 16723145124 = 58491^2 + 129318^2 .

It is not a de Polignac number, because 20144342205 - 2² = 20144342201 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20144342201) 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, 17216802 + ... + 17217971.

It is an arithmetic number, because the mean of its divisors is an integer number (1566782217).

Almost surely, 2^20144342205 is an apocalyptic number.

It is an amenable number.

20144342205 is a deficient number, since it is larger than the sum of its proper divisors (17458431003).

20144342205 is a wasteful number, since it uses less digits than its factorization.

20144342205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34434797 (or 34434794 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 27.

Adding to 20144342205 its reverse (50224344102), we get a palindrome (70368686307).

The spelling of 20144342205 in words is "twenty billion, one hundred forty-four million, three hundred forty-two thousand, two hundred five".