20412434200205 has 16 divisors (see below), whose sum is σ = 24550857145584. Its totient is φ = 16292698183680.

The previous prime is 20412434200187. The next prime is 20412434200217. The reversal of 20412434200205 is 50200243421402.

It can be written as a sum of positive squares in 8 ways, for example, as 2726557210441 + 17685876989764 = 1651229^2 + 4205458^2 .

It is not a de Polignac number, because 20412434200205 - 2¹⁰ = 20412434199181 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1333937 + ... + 6527193.

It is an arithmetic number, because the mean of its divisors is an integer number (1534428571599).

Almost surely, 2^{20412434200205} is an apocalyptic number.

It is an amenable number.

20412434200205 is a deficient number, since it is larger than the sum of its proper divisors (4138422945379).

20412434200205 is a wasteful number, since it uses less digits than its factorization.

20412434200205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5195056.

The product of its (nonzero) digits is 15360, while the sum is 29.

Adding to 20412434200205 its reverse (50200243421402), we get a palindrome (70612677621607).

The spelling of 20412434200205 in words is "twenty trillion, four hundred twelve billion, four hundred thirty-four million, two hundred thousand, two hundred five".