4478122218745 has 16 divisors (see below), whose sum is σ = 6141491209728. Its totient is φ = 3070679152320.

The previous prime is 4478122218743. The next prime is 4478122218763. The reversal of 4478122218745 is 5478122218744.

It is a happy number.

It is not a de Polignac number, because 4478122218745 - 2¹ = 4478122218743 is a prime.

It is not an unprimeable number, because it can be changed into a prime (4478122218743) 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 15 ways as a sum of consecutive naturals, for example, 2842912 + ... + 4127758.

It is an arithmetic number, because the mean of its divisors is an integer number (383843200608).

Almost surely, 2^{4478122218745} is an apocalyptic number.

It is an amenable number.

4478122218745 is a deficient number, since it is larger than the sum of its proper divisors (1663368990983).

4478122218745 is a wasteful number, since it uses less digits than its factorization.

4478122218745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1384440.

The product of its digits is 8028160, while the sum is 55.

Subtracting 4478122218745 from its reverse (5478122218744), we obtain a palindrome (999999999999).

The spelling of 4478122218745 in words is "four trillion, four hundred seventy-eight billion, one hundred twenty-two million, two hundred eighteen thousand, seven hundred forty-five".