44554445545 has 4 divisors (see below), whose sum is σ = 53465334660. Its totient is φ = 35643556432.

The previous prime is 44554445531. The next prime is 44554445581. The reversal of 44554445545 is 54554445544.

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 9284478736 + 35269966809 = 96356^2 + 187803^2 .

It is a cyclic number.

It is not a de Polignac number, because 44554445545 - 2¹¹ = 44554443497 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4455444550 + ... + 4455444559.

It is an arithmetic number, because the mean of its divisors is an integer number (13366333665).

Almost surely, 2^44554445545 is an apocalyptic number.

It is an amenable number.

44554445545 is a deficient number, since it is larger than the sum of its proper divisors (8910889115).

44554445545 is an equidigital number, since it uses as much as digits as its factorization.

44554445545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8910889114.

The product of its digits is 12800000, while the sum is 49.

Subtracting 44554445545 from its reverse (54554445544), we obtain a palindrome (9999999999).

The spelling of 44554445545 in words is "forty-four billion, five hundred fifty-four million, four hundred forty-five thousand, five hundred forty-five".