44081221633 has 4 divisors (see below), whose sum is σ = 44091413440. Its totient is φ = 44071029828.

The previous prime is 44081221607. The next prime is 44081221673. The reversal of 44081221633 is 33612218044.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 44081221633 - 2¹⁷ = 44081090561 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (44081221603) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5089413 + ... + 5098066.

It is an arithmetic number, because the mean of its divisors is an integer number (11022853360).

Almost surely, 2^44081221633 is an apocalyptic number.

It is an amenable number.

44081221633 is a deficient number, since it is larger than the sum of its proper divisors (10191807).

44081221633 is a wasteful number, since it uses less digits than its factorization.

44081221633 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10191806.

The product of its (nonzero) digits is 27648, while the sum is 34.

Adding to 44081221633 its reverse (33612218044), we get a palindrome (77693439677).

The spelling of 44081221633 in words is "forty-four billion, eighty-one million, two hundred twenty-one thousand, six hundred thirty-three".