44581366449 has 9 divisors (see below), whose sum is σ = 64396222059. Its totient is φ = 29720488680.

The previous prime is 44581366439. The next prime is 44581366481. The reversal of 44581366449 is 94466318544.

The square root of 44581366449 is 211143.

It is a perfect power (a square), and thus also a powerful number.

44581366449 is a `hidden beast` number, since 445 + 8 + 136 + 64 + 4 + 9 = 666.

It can be written as a sum of positive squares in only one way, i.e., 13781116449 + 30800250000 = 117393^2 + 175500^2 .

It is a tau number, because it is divible by the number of its divisors (9).

It is not a de Polignac number, because 44581366449 - 2¹⁹ = 44580842161 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 44581366395 and 44581366404.

It is not an unprimeable number, because it can be changed into a prime (44581366429) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 598239 + ... + 668619.

Almost surely, 2^44581366449 is an apocalyptic number.

44581366449 is the 211143-rd square number.

44581366449 is the 105572-nd centered octagonal number.

It is an amenable number.

44581366449 is a deficient number, since it is larger than the sum of its proper divisors (19814855610).

44581366449 is an frugal number, since it uses more digits than its factorization.

44581366449 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 140768 (or 70384 counting only the distinct ones).

The product of its digits is 9953280, while the sum is 54.

The spelling of 44581366449 in words is "forty-four billion, five hundred eighty-one million, three hundred sixty-six thousand, four hundred forty-nine".