44041812421 has 2 divisors, whose sum is σ = 44041812422. Its totient is φ = 44041812420.

The previous prime is 44041812403. The next prime is 44041812487. The reversal of 44041812421 is 12421814044.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 38040211521 + 6001600900 = 195039^2 + 77470^2 .

It is a cyclic number.

It is not a de Polignac number, because 44041812421 - 2¹⁷ = 44041681349 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (44041812121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22020906210 + 22020906211.

It is an arithmetic number, because the mean of its divisors is an integer number (22020906211).

Almost surely, 2^44041812421 is an apocalyptic number.

It is an amenable number.

44041812421 is a deficient number, since it is larger than the sum of its proper divisors (1).

44041812421 is an equidigital number, since it uses as much as digits as its factorization.

44041812421 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8192, while the sum is 31.

The spelling of 44041812421 in words is "forty-four billion, forty-one million, eight hundred twelve thousand, four hundred twenty-one".