544423643550 has 120 divisors (see below), whose sum is σ = 1526079105936. Its totient is φ = 143894741760.

The previous prime is 544423643503. The next prime is 544423643557. The reversal of 544423643550 is 55346324445.

544423643550 is a `hidden beast` number, since 54 + 4 + 4 + 2 + 3 + 6 + 43 + 550 = 666.

It is a super-3 number, since 3×544423643550³ (a number of 36 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a junction number, because it is equal to n+sod(n) for n = 544423643496 and 544423643505.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (544423643557) by changing a digit.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 137154 + ... + 1052453.

Almost surely, 2^544423643550 is an apocalyptic number.

544423643550 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 544423643550, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (763039552968).

544423643550 is an abundant number, since it is smaller than the sum of its proper divisors (981655462386).

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

544423643550 is a wasteful number, since it uses less digits than its factorization.

544423643550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1189744 (or 1189730 counting only the distinct ones).

The product of its (nonzero) digits is 3456000, while the sum is 45.

Adding to 544423643550 its reverse (55346324445), we get a palindrome (599769967995).

The spelling of 544423643550 in words is "five hundred forty-four billion, four hundred twenty-three million, six hundred forty-three thousand, five hundred fifty".