5549044644 has 240 divisors, whose sum is σ = 17149513920. Its totient is φ = 1542447360.

The previous prime is 5549044637. The next prime is 5549044661. The reversal of 5549044644 is 4464409455.

5549044644 is a `hidden beast` number, since 5 + 549 + 0 + 44 + 64 + 4 = 666.

It is a super-2 number, since 2×5549044644² = 61583792922210173472, which contains 22 as substring.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 5549044644.

It is an unprimeable number.

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 79 ways as a sum of consecutive naturals, for example, 10609767 + ... + 10610289.

It is an arithmetic number, because the mean of its divisors is an integer number (71456308).

Almost surely, 2^5549044644 is an apocalyptic number.

5549044644 is a gapful number since it is divisible by the number (54) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 5549044644, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8574756960).

5549044644 is an abundant number, since it is smaller than the sum of its proper divisors (11600469276).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

5549044644 is a wasteful number, since it uses less digits than its factorization.

5549044644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 792 (or 781 counting only the distinct ones).

The product of its (nonzero) digits is 1382400, while the sum is 45.

The square root of 5549044644 is about 74491.9099231588. The cubic root of 5549044644 is about 1770.4054572433.

The spelling of 5549044644 in words is "five billion, five hundred forty-nine million, forty-four thousand, six hundred forty-four".