20000000005 has 16 divisors (see below), whose sum is σ = 24703672320. Its totient is φ = 15536247552.

The previous prime is 19999999967. The next prime is 20000000089. The reversal of 20000000005 is 50000000002.

It is a sliding number, since 20000000005 = 5 + 20000000000 and 1/5 + 1/20000000000 = 0.20000000005.

It is a cyclic number.

It is not a de Polignac number, because 20000000005 - 2¹¹ = 19999997957 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 305220 + ... + 364909.

It is an arithmetic number, because the mean of its divisors is an integer number (1543979520).

Almost surely, 2^20000000005 is an apocalyptic number.

It is an amenable number.

20000000005 is a deficient number, since it is larger than the sum of its proper divisors (4703672315).

20000000005 is a wasteful number, since it uses less digits than its factorization.

20000000005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 670308.

The product of its (nonzero) digits is 10, while the sum is 7.

Adding to 20000000005 its reverse (50000000002), we get a palindrome (70000000007).

It can be divided in two parts, 2000000000 and 5, that multiplied together give a 10-th power (10000000000 = 10¹⁰).

The spelling of 20000000005 in words is "twenty billion, five", and thus it is an aban number and an uban number.