44718519409 has 4 divisors (see below), whose sum is σ = 44787001716. Its totient is φ = 44650037104.

The previous prime is 44718519407. The next prime is 44718519427. The reversal of 44718519409 is 90491581744.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 20334760000 + 24383759409 = 142600^2 + 156153^2 .

It is a cyclic number.

It is not a de Polignac number, because 44718519409 - 2¹ = 44718519407 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (44718519403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34240174 + ... + 34241479.

It is an arithmetic number, because the mean of its divisors is an integer number (11196750429).

Almost surely, 2^44718519409 is an apocalyptic number.

It is an amenable number.

44718519409 is a deficient number, since it is larger than the sum of its proper divisors (68482307).

44718519409 is an equidigital number, since it uses as much as digits as its factorization.

44718519409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68482306.

The product of its (nonzero) digits is 1451520, while the sum is 52.

The spelling of 44718519409 in words is "forty-four billion, seven hundred eighteen million, five hundred nineteen thousand, four hundred nine".