44111322161 has 4 divisors (see below), whose sum is σ = 44516013300. Its totient is φ = 43706631024.

The previous prime is 44111322139. The next prime is 44111322223. The reversal of 44111322161 is 16122311144.

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 39479703025 + 4631619136 = 198695^2 + 68056^2 .

It is a cyclic number.

It is not a de Polignac number, because 44111322161 - 2³⁰ = 43037580337 is a prime.

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 44111322161.

It is not an unprimeable number, because it can be changed into a prime (44111322461) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 202345406 + ... + 202345623.

It is an arithmetic number, because the mean of its divisors is an integer number (11129003325).

Almost surely, 2^44111322161 is an apocalyptic number.

It is an amenable number.

44111322161 is a deficient number, since it is larger than the sum of its proper divisors (404691139).

44111322161 is a wasteful number, since it uses less digits than its factorization.

44111322161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 404691138.

The product of its digits is 1152, while the sum is 26.

The spelling of 44111322161 in words is "forty-four billion, one hundred eleven million, three hundred twenty-two thousand, one hundred sixty-one".