544651713221 has 8 divisors (see below), whose sum is σ = 679046291904. Its totient is φ = 424403932320.

The previous prime is 544651713197. The next prime is 544651713247. The reversal of 544651713221 is 122317156445.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 544651713221 - 2¹⁰ = 544651712197 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 (544651713121) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3536699360 + ... + 3536699513.

It is an arithmetic number, because the mean of its divisors is an integer number (84880786488).

Almost surely, 2^544651713221 is an apocalyptic number.

It is an amenable number.

544651713221 is a deficient number, since it is larger than the sum of its proper divisors (134394578683).

544651713221 is a wasteful number, since it uses less digits than its factorization.

544651713221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7073398891.

The product of its digits is 201600, while the sum is 41.

Adding to 544651713221 its reverse (122317156445), we get a palindrome (666968869666).

The spelling of 544651713221 in words is "five hundred forty-four billion, six hundred fifty-one million, seven hundred thirteen thousand, two hundred twenty-one".