544477811616 has 144 divisors (see below), whose sum is σ = 1552699852704. Its totient is φ = 180984586752.

The previous prime is 544477811611. The next prime is 544477811671. The reversal of 544477811616 is 616118774445.

It is a happy number.

544477811616 is a `hidden beast` number, since 5 + 4 + 4 + 4 + 7 + 7 + 8 + 11 + 616 = 666.

It is a tau number, because it is divible by the number of its divisors (144).

It is not an unprimeable number, because it can be changed into a prime (544477811611) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 219812170 + ... + 219814646.

It is an arithmetic number, because the mean of its divisors is an integer number (10782637866).

Almost surely, 2^544477811616 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 544477811616, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (776349926352).

544477811616 is an abundant number, since it is smaller than the sum of its proper divisors (1008222041088).

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

544477811616 is a wasteful number, since it uses less digits than its factorization.

544477811616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4323 (or 4312 counting only the distinct ones).

The product of its digits is 4515840, while the sum is 54.

The spelling of 544477811616 in words is "five hundred forty-four billion, four hundred seventy-seven million, eight hundred eleven thousand, six hundred sixteen".