43111334220461 has 4 divisors (see below), whose sum is σ = 46427590698972. Its totient is φ = 39795077741952.

The previous prime is 43111334220379. The next prime is 43111334220497. The reversal of 43111334220461 is 16402243311134.

43111334220461 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 14276646618025 + 28834687602436 = 3778445^2 + 5369794^2 .

It is a de Polignac number, because none of the positive numbers 2^k-43111334220461 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43111334220061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1658128239236 + ... + 1658128239261.

It is an arithmetic number, because the mean of its divisors is an integer number (11606897674743).

Almost surely, 2^{43111334220461} is an apocalyptic number.

It is an amenable number.

43111334220461 is a deficient number, since it is larger than the sum of its proper divisors (3316256478511).

43111334220461 is a wasteful number, since it uses less digits than its factorization.

43111334220461 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3316256478510.

The product of its (nonzero) digits is 41472, while the sum is 35.

Adding to 43111334220461 its reverse (16402243311134), we get a palindrome (59513577531595).

The spelling of 43111334220461 in words is "forty-three trillion, one hundred eleven billion, three hundred thirty-four million, two hundred twenty thousand, four hundred sixty-one".