44505784385 has 4 divisors (see below), whose sum is σ = 53406941268. Its totient is φ = 35604627504.

The previous prime is 44505784381. The next prime is 44505784391. The reversal of 44505784385 is 58348750544.

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 13394821696 + 31110962689 = 115736^2 + 176383^2 .

It is a cyclic number.

It is not a de Polignac number, because 44505784385 - 2² = 44505784381 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (44505784381) 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, 4450578434 + ... + 4450578443.

It is an arithmetic number, because the mean of its divisors is an integer number (13351735317).

Almost surely, 2^44505784385 is an apocalyptic number.

It is an amenable number.

44505784385 is a deficient number, since it is larger than the sum of its proper divisors (8901156883).

44505784385 is an equidigital number, since it uses as much as digits as its factorization.

44505784385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8901156882.

The product of its (nonzero) digits is 10752000, while the sum is 53.

The spelling of 44505784385 in words is "forty-four billion, five hundred five million, seven hundred eighty-four thousand, three hundred eighty-five".