544442222421 has 6 divisors (see below), whose sum is σ = 786416543510. Its totient is φ = 362961481608.

The previous prime is 544442222417. The next prime is 544442222437. The reversal of 544442222421 is 124222244445.

544442222421 is a `hidden beast` number, since 5 + 4 + 4 + 4 + 4 + 2 + 222 + 421 = 666.

It can be written as a sum of positive squares in only one way, i.e., 458423784900 + 86018437521 = 677070^2 + 293289^2 .

It is not a de Polignac number, because 544442222421 - 2² = 544442222417 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 (544442222491) 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, 30246790126 + ... + 30246790143.

Almost surely, 2^544442222421 is an apocalyptic number.

It is an amenable number.

544442222421 is a deficient number, since it is larger than the sum of its proper divisors (241974321089).

544442222421 is a wasteful number, since it uses less digits than its factorization.

544442222421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60493580275 (or 60493580272 counting only the distinct ones).

The product of its digits is 163840, while the sum is 36.

Adding to 544442222421 its reverse (124222244445), we get a palindrome (668664466866).

The spelling of 544442222421 in words is "five hundred forty-four billion, four hundred forty-two million, two hundred twenty-two thousand, four hundred twenty-one".