44451784009 has 4 divisors (see below), whose sum is σ = 44455723204. Its totient is φ = 44447844816.

The previous prime is 44451784007. The next prime is 44451784019. The reversal of 44451784009 is 90048715444.

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 37804969225 + 6646814784 = 194435^2 + 81528^2 .

It is a cyclic number.

It is not a de Polignac number, because 44451784009 - 2¹ = 44451784007 is a prime.

It is a super-2 number, since 2×44451784009² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 44451784009.

It is not an unprimeable number, because it can be changed into a prime (44451784007) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1952622 + ... + 1975255.

It is an arithmetic number, because the mean of its divisors is an integer number (11113930801).

Almost surely, 2^44451784009 is an apocalyptic number.

It is an amenable number.

44451784009 is a deficient number, since it is larger than the sum of its proper divisors (3939195).

44451784009 is a wasteful number, since it uses less digits than its factorization.

44451784009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3939194.

The product of its (nonzero) digits is 645120, while the sum is 46.

The spelling of 44451784009 in words is "forty-four billion, four hundred fifty-one million, seven hundred eighty-four thousand, nine".