44221643156 has 6 divisors (see below), whose sum is σ = 77387875530. Its totient is φ = 22110821576.

The previous prime is 44221643149. The next prime is 44221643161. The reversal of 44221643156 is 65134612244.

It can be written as a sum of positive squares in only one way, i.e., 43940544400 + 281098756 = 209620^2 + 16766^2 .

It is a super-3 number, since 3×44221643156³ (a number of 33 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 5527705391 + ... + 5527705398.

It is an arithmetic number, because the mean of its divisors is an integer number (12897979255).

Almost surely, 2^44221643156 is an apocalyptic number.

It is an amenable number.

44221643156 is a deficient number, since it is larger than the sum of its proper divisors (33166232374).

44221643156 is a wasteful number, since it uses less digits than its factorization.

44221643156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11055410793 (or 11055410791 counting only the distinct ones).

The product of its digits is 138240, while the sum is 38.

The spelling of 44221643156 in words is "forty-four billion, two hundred twenty-one million, six hundred forty-three thousand, one hundred fifty-six".