20000517222005 has 8 divisors (see below), whose sum is σ = 24076332405432. Its totient is φ = 15949939284928.

The previous prime is 20000517221989. The next prime is 20000517222019. The reversal of 20000517222005 is 50022271500002.

It can be written as a sum of positive squares in 4 ways, for example, as 601980463876 + 19398536758129 = 775874^2 + 4404377^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20000517222005 - 2⁴ = 20000517221989 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 7 ways as a sum of consecutive naturals, for example, 6309309842 + ... + 6309313011.

It is an arithmetic number, because the mean of its divisors is an integer number (3009541550679).

Almost surely, 2^{20000517222005} is an apocalyptic number.

It is an amenable number.

20000517222005 is a deficient number, since it is larger than the sum of its proper divisors (4075815183427).

20000517222005 is a wasteful number, since it uses less digits than its factorization.

20000517222005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12618623175.

The product of its (nonzero) digits is 2800, while the sum is 26.

Adding to 20000517222005 its reverse (50022271500002), we get a palindrome (70022788722007).

The spelling of 20000517222005 in words is "twenty trillion, five hundred seventeen million, two hundred twenty-two thousand, five".