544065561664 has 63 divisors (see below), whose sum is σ = 1089186533967. Its totient is φ = 269645881344.

The previous prime is 544065561653. The next prime is 544065561713. The reversal of 544065561664 is 466165560445.

The square root of 544065561664 is 737608.

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

It can be written as a sum of positive squares in 4 ways, for example, as 4252083264 + 539813478400 = 65208^2 + 734720^2 .

It is a Duffinian number.

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 8 ways as a sum of consecutive naturals, for example, 808418032 + ... + 808418704.

Almost surely, 2^544065561664 is an apocalyptic number.

544065561664 is the 737608-th square number.

It is an amenable number.

544065561664 is an abundant number, since it is smaller than the sum of its proper divisors (545120972303).

544065561664 is an frugal number, since it uses more digits than its factorization.

544065561664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1632 (or 812 counting only the distinct ones).

The product of its (nonzero) digits is 10368000, while the sum is 52.

The spelling of 544065561664 in words is "five hundred forty-four billion, sixty-five million, five hundred sixty-one thousand, six hundred sixty-four".