44445254509 has 2 divisors, whose sum is σ = 44445254510. Its totient is φ = 44445254508.

The previous prime is 44445254443. The next prime is 44445254543. The reversal of 44445254509 is 90545254444.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 41525473284 + 2919781225 = 203778^2 + 54035^2 .

It is a cyclic number.

It is not a de Polignac number, because 44445254509 - 2¹³ = 44445246317 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (44445254569) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22222627254 + 22222627255.

It is an arithmetic number, because the mean of its divisors is an integer number (22222627255).

Almost surely, 2^44445254509 is an apocalyptic number.

It is an amenable number.

44445254509 is a deficient number, since it is larger than the sum of its proper divisors (1).

44445254509 is an equidigital number, since it uses as much as digits as its factorization.

44445254509 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2304000, while the sum is 46.

The spelling of 44445254509 in words is "forty-four billion, four hundred forty-five million, two hundred fifty-four thousand, five hundred nine".