43111044001 has 4 divisors (see below), whose sum is σ = 43127055252. Its totient is φ = 43095032752.

The previous prime is 43111043981. The next prime is 43111044019. The reversal of 43111044001 is 10044011134.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 15405774400 + 27705269601 = 124120^2 + 166449^2 .

It is a cyclic number.

It is not a de Polignac number, because 43111044001 - 2¹³ = 43111035809 is a prime.

It is a super-2 number, since 2×43111044001² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 43111044001.

It is not an unprimeable number, because it can be changed into a prime (43111044091) 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, 8001586 + ... + 8006971.

It is an arithmetic number, because the mean of its divisors is an integer number (10781763813).

Almost surely, 2^43111044001 is an apocalyptic number.

It is an amenable number.

43111044001 is a deficient number, since it is larger than the sum of its proper divisors (16011251).

43111044001 is a wasteful number, since it uses less digits than its factorization.

43111044001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16011250.

The product of its (nonzero) digits is 192, while the sum is 19.

Adding to 43111044001 its reverse (10044011134), we get a palindrome (53155055135).

The spelling of 43111044001 in words is "forty-three billion, one hundred eleven million, forty-four thousand, one".