544413021440 has 36 divisors (see below), whose sum is σ = 1304039318484. Its totient is φ = 217765208064.

The previous prime is 544413021371. The next prime is 544413021521. The reversal of 544413021440 is 44120314445.

It can be written as a sum of positive squares in 2 ways, for example, as 242757231616 + 301655789824 = 492704^2 + 549232^2 .

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a junction number, because it is equal to n+sod(n) for n = 544413021397 and 544413021406.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 212660057 + ... + 212662616.

Almost surely, 2^544413021440 is an apocalyptic number.

It is an amenable number.

544413021440 is an abundant number, since it is smaller than the sum of its proper divisors (759626297044).

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

544413021440 is an equidigital number, since it uses as much as digits as its factorization.

544413021440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 425322694 (or 425322680 counting only the distinct ones).

The product of its (nonzero) digits is 30720, while the sum is 32.

Adding to 544413021440 its reverse (44120314445), we get a palindrome (588533335885).

The spelling of 544413021440 in words is "five hundred forty-four billion, four hundred thirteen million, twenty-one thousand, four hundred forty".