544563334021 has 6 divisors (see below), whose sum is σ = 633471633510. Its totient is φ = 466768571976.

The previous prime is 544563333973. The next prime is 544563334043. The reversal of 544563334021 is 120433365445.

It can be written as a sum of positive squares in only one way, i.e., 501602481121 + 42960852900 = 708239^2 + 207270^2 .

It is not a de Polignac number, because 544563334021 - 2¹³ = 544563325829 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (544563334061) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5556768666 + ... + 5556768763.

It is an arithmetic number, because the mean of its divisors is an integer number (105578605585).

Almost surely, 2^544563334021 is an apocalyptic number.

It is an amenable number.

544563334021 is a deficient number, since it is larger than the sum of its proper divisors (88908299489).

544563334021 is a wasteful number, since it uses less digits than its factorization.

544563334021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11113537443 (or 11113537436 counting only the distinct ones).

The product of its (nonzero) digits is 518400, while the sum is 40.

Adding to 544563334021 its reverse (120433365445), we get a palindrome (664996699466).

The spelling of 544563334021 in words is "five hundred forty-four billion, five hundred sixty-three million, three hundred thirty-four thousand, twenty-one".