20011000004 has 12 divisors (see below), whose sum is σ = 35340528300. Its totient is φ = 9913706208.

The previous prime is 20011000003. The next prime is 20011000019. The reversal of 20011000004 is 40000011002.

It can be written as a sum of positive squares in 2 ways, for example, as 17121722500 + 2889277504 = 130850^2 + 53752^2 .

It is a junction number, because it is equal to n+sod(n) for n = 20010999955 and 20011000000.

It is not an unprimeable number, because it can be changed into a prime (20011000001) 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, 22947959 + ... + 22948830.

It is an arithmetic number, because the mean of its divisors is an integer number (2945044025).

Almost surely, 2^20011000004 is an apocalyptic number.

It is an amenable number.

20011000004 is a deficient number, since it is larger than the sum of its proper divisors (15329528296).

20011000004 is a wasteful number, since it uses less digits than its factorization.

20011000004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45896902 (or 45896900 counting only the distinct ones).

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

Adding to 20011000004 its reverse (40000011002), we get a palindrome (60011011006).

The spelling of 20011000004 in words is "twenty billion, eleven million, four", and thus it is an aban number.