44165314421 has 4 divisors (see below), whose sum is σ = 44165947500. Its totient is φ = 44164681344.

The previous prime is 44165314379. The next prime is 44165314423. The reversal of 44165314421 is 12441356144.

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 19961733796 + 24203580625 = 141286^2 + 155575^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-44165314421 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (44165314423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 196796 + ... + 356453.

It is an arithmetic number, because the mean of its divisors is an integer number (11041486875).

Almost surely, 2^44165314421 is an apocalyptic number.

It is an amenable number.

44165314421 is a deficient number, since it is larger than the sum of its proper divisors (633079).

44165314421 is an equidigital number, since it uses as much as digits as its factorization.

44165314421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 633078.

The product of its digits is 46080, while the sum is 35.

The spelling of 44165314421 in words is "forty-four billion, one hundred sixty-five million, three hundred fourteen thousand, four hundred twenty-one".