44828745985 has 8 divisors (see below), whose sum is σ = 53799339816. Its totient is φ = 35859767040.

The previous prime is 44828745971. The next prime is 44828745989. The reversal of 44828745985 is 58954782844.

It is a Cunningham number, because it is equal to 211728²+1.

It can be written as a sum of positive squares in 4 ways, for example, as 16138145296 + 28690600689 = 127036^2 + 169383^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 44828745985 - 2⁹ = 44828745473 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (44828745989) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 341784 + ... + 454393.

It is an arithmetic number, because the mean of its divisors is an integer number (6724917477).

Almost surely, 2^44828745985 is an apocalyptic number.

It is an amenable number.

44828745985 is a deficient number, since it is larger than the sum of its proper divisors (8970593831).

44828745985 is a wasteful number, since it uses less digits than its factorization.

44828745985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 807443.

The product of its digits is 103219200, while the sum is 64.

The spelling of 44828745985 in words is "forty-four billion, eight hundred twenty-eight million, seven hundred forty-five thousand, nine hundred eighty-five".