544355421644 has 24 divisors (see below), whose sum is σ = 997176162528. Its totient is φ = 259522609280.

The previous prime is 544355421637. The next prime is 544355421647. The reversal of 544355421644 is 446124553445.

It is not an unprimeable number, because it can be changed into a prime (544355421647) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9303497 + ... + 9361824.

It is an arithmetic number, because the mean of its divisors is an integer number (41549006772).

Almost surely, 2^544355421644 is an apocalyptic number.

It is an amenable number.

544355421644 is a deficient number, since it is larger than the sum of its proper divisors (452820740884).

544355421644 is a wasteful number, since it uses less digits than its factorization.

544355421644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18665665 (or 18665663 counting only the distinct ones).

The product of its digits is 4608000, while the sum is 47.

The spelling of 544355421644 in words is "five hundred forty-four billion, three hundred fifty-five million, four hundred twenty-one thousand, six hundred forty-four".