4000000012 has 24 divisors (see below), whose sum is σ = 7328192256. Its totient is φ = 1906798608.

The previous prime is 4000000009. The next prime is 4000000019. The reversal of 4000000012 is 2100000004.

4000000012 is a modest number, since divided by 12 gives 4 as remainder.

It is a junction number, because it is equal to n+sod(n) for n = 3999999941 and 4000000004.

It is not an unprimeable number, because it can be changed into a prime (4000000019) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 42568 + ... + 99055.

It is an arithmetic number, because the mean of its divisors is an integer number (305341344).

Almost surely, 2^4000000012 is an apocalyptic number.

It is an amenable number.

4000000012 is a deficient number, since it is larger than the sum of its proper divisors (3328192244).

4000000012 is a wasteful number, since it uses less digits than its factorization.

4000000012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 141957 (or 141955 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 7.

The square root of 4000000012 is about 63245.5532982359. The cubic root of 4000000012 is about 1587.4010535556.

Adding to 4000000012 its reverse (2100000004), we get a palindrome (6100000016).

The spelling of 4000000012 in words is "four billion, twelve", and thus it is an aban number.