44534044021 has 2 divisors, whose sum is σ = 44534044022. Its totient is φ = 44534044020.

The previous prime is 44534044019. The next prime is 44534044031. The reversal of 44534044021 is 12044043544.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 43035502500 + 1498541521 = 207450^2 + 38711^2 .

It is a cyclic number.

It is not a de Polignac number, because 44534044021 - 2¹ = 44534044019 is a prime.

Together with 44534044019, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (44534044031) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22267022010 + 22267022011.

It is an arithmetic number, because the mean of its divisors is an integer number (22267022011).

Almost surely, 2^44534044021 is an apocalyptic number.

It is an amenable number.

44534044021 is a deficient number, since it is larger than the sum of its proper divisors (1).

44534044021 is an equidigital number, since it uses as much as digits as its factorization.

44534044021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 30720, while the sum is 31.

Adding to 44534044021 its reverse (12044043544), we get a palindrome (56578087565).

The spelling of 44534044021 in words is "forty-four billion, five hundred thirty-four million, forty-four thousand, twenty-one".