4000004000043 has 16 divisors (see below), whose sum is σ = 5354333905536. Its totient is φ = 2656172656640.

The previous prime is 4000004000017. The next prime is 4000004000063. The reversal of 4000004000043 is 3400004000004.

It is a cyclic number.

It is not a de Polignac number, because 4000004000043 - 2²⁶ = 3999936891179 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 4000003999986 and 4000004000031.

It is not an unprimeable number, because it can be changed into a prime (4000004000063) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18869680 + ... + 19080482.

It is an arithmetic number, because the mean of its divisors is an integer number (334645869096).

Almost surely, 2^{4000004000043} is an apocalyptic number.

4000004000043 is a deficient number, since it is larger than the sum of its proper divisors (1354329905493).

4000004000043 is a wasteful number, since it uses less digits than its factorization.

4000004000043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 235674.

The product of its (nonzero) digits is 192, while the sum is 15.

Adding to 4000004000043 its reverse (3400004000004), we get a palindrome (7400008000047).

The spelling of 4000004000043 in words is "four trillion, four million, forty-three", and thus it is an aban number.