20065020261 has 16 divisors (see below), whose sum is σ = 31430521920. Its totient is φ = 11225185920.

The previous prime is 20065020259. The next prime is 20065020271. The reversal of 20065020261 is 16202056002.

It is not a de Polignac number, because 20065020261 - 2¹ = 20065020259 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20065020271) 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, 23385376 + ... + 23386233.

It is an arithmetic number, because the mean of its divisors is an integer number (1964407620).

Almost surely, 2^20065020261 is an apocalyptic number.

It is an amenable number.

20065020261 is a deficient number, since it is larger than the sum of its proper divisors (11365501659).

20065020261 is a wasteful number, since it uses less digits than its factorization.

20065020261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46771636.

The product of its (nonzero) digits is 1440, while the sum is 24.

Adding to 20065020261 its reverse (16202056002), we get a palindrome (36267076263).

The spelling of 20065020261 in words is "twenty billion, sixty-five million, twenty thousand, two hundred sixty-one".