20534102205 has 16 divisors (see below), whose sum is σ = 34787185344. Its totient is φ = 10307313920.

The previous prime is 20534102167. The next prime is 20534102209. The reversal of 20534102205 is 50220143502.

It is not a de Polignac number, because 20534102205 - 2⁷ = 20534102077 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20534102209) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 40262691 + ... + 40263200.

It is an arithmetic number, because the mean of its divisors is an integer number (2174199084).

Almost surely, 2^20534102205 is an apocalyptic number.

It is an amenable number.

20534102205 is a deficient number, since it is larger than the sum of its proper divisors (14253083139).

20534102205 is a wasteful number, since it uses less digits than its factorization.

20534102205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80525916.

The product of its (nonzero) digits is 2400, while the sum is 24.

Adding to 20534102205 its reverse (50220143502), we get a palindrome (70754245707).

The spelling of 20534102205 in words is "twenty billion, five hundred thirty-four million, one hundred two thousand, two hundred five".