544355344221 has 32 divisors (see below), whose sum is σ = 783609845760. Its totient is φ = 334144112064.

The previous prime is 544355344199. The next prime is 544355344259. The reversal of 544355344221 is 122443553445.

It is not a de Polignac number, because 544355344221 - 2⁵ = 544355344189 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (544355344261) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 25692010 + ... + 25713188.

It is an arithmetic number, because the mean of its divisors is an integer number (24487807680).

Almost surely, 2^544355344221 is an apocalyptic number.

It is an amenable number.

544355344221 is a deficient number, since it is larger than the sum of its proper divisors (239254501539).

544355344221 is a wasteful number, since it uses less digits than its factorization.

544355344221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22825.

The product of its digits is 1152000, while the sum is 42.

Adding to 544355344221 its reverse (122443553445), we get a palindrome (666798897666).

The spelling of 544355344221 in words is "five hundred forty-four billion, three hundred fifty-five million, three hundred forty-four thousand, two hundred twenty-one".