20005000001 has 4 divisors (see below), whose sum is σ = 22862857152. Its totient is φ = 17147142852.

The previous prime is 20004999997. The next prime is 20005000013. The reversal of 20005000001 is 10000050002.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 20005000001 - 2² = 20004999997 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20005000201) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1428928565 + ... + 1428928578.

It is an arithmetic number, because the mean of its divisors is an integer number (5715714288).

Almost surely, 2^20005000001 is an apocalyptic number.

It is an amenable number.

20005000001 is a deficient number, since it is larger than the sum of its proper divisors (2857857151).

20005000001 is an equidigital number, since it uses as much as digits as its factorization.

20005000001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2857857150.

The product of its (nonzero) digits is 10, while the sum is 8.

Adding to 20005000001 its reverse (10000050002), we get a palindrome (30005050003).

The spelling of 20005000001 in words is "twenty billion, five million, one", and thus it is an aban number and an uban number.