4244749557841 has 45 divisors (see below), whose sum is σ = 4690407174711. Its totient is φ = 3841414918848.

The previous prime is 4244749557833. The next prime is 4244749557887. The reversal of 4244749557841 is 1487559474424.

The square root of 4244749557841 is 2060279.

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

It can be written as a sum of positive squares in 7 ways, for example, as 4222757854225 + 21991703616 = 2054935^2 + 148296^2 .

It is not a de Polignac number, because 4244749557841 - 2³ = 4244749557833 is a prime.

It is a Smith number, since the sum of its digits (64) coincides with the sum of the digits of its prime factors.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4244749257841) 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 44 ways as a sum of consecutive naturals, for example, 25417661940 + ... + 25417662106.

Almost surely, 2^{4244749557841} is an apocalyptic number.

4244749557841 is the 2060279-th square number.

4244749557841 is the 1030140-th centered octagonal number.

It is an amenable number.

4244749557841 is a deficient number, since it is larger than the sum of its proper divisors (445657616870).

4244749557841 is an frugal number, since it uses more digits than its factorization.

4244749557841 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 532 (or 253 counting only the distinct ones).

The product of its digits is 180633600, while the sum is 64.

Multiplying 4244749557841 by its sum of digits (64), we get a square (271663971701824 = 16482232²).

The spelling of 4244749557841 in words is "four trillion, two hundred forty-four billion, seven hundred forty-nine million, five hundred fifty-seven thousand, eight hundred forty-one".