215042225044 has 12 divisors (see below), whose sum is σ = 377722869300. Its totient is φ = 107121405248.

The previous prime is 215042225029. The next prime is 215042225071. The reversal of 215042225044 is 440522240512.

It can be written as a sum of positive squares in 2 ways, for example, as 105456067600 + 109586157444 = 324740^2 + 331038^2 .

It is a junction number, because it is equal to n+sod(n) for n = 215042224997 and 215042225015.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 99925609 + ... + 99927760.

It is an arithmetic number, because the mean of its divisors is an integer number (31476905775).

Almost surely, 2^215042225044 is an apocalyptic number.

It is an amenable number.

215042225044 is a deficient number, since it is larger than the sum of its proper divisors (162680644256).

215042225044 is a wasteful number, since it uses less digits than its factorization.

215042225044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 199853642 (or 199853640 counting only the distinct ones).

The product of its (nonzero) digits is 25600, while the sum is 31.

Adding to 215042225044 its reverse (440522240512), we get a palindrome (655564465556).

The spelling of 215042225044 in words is "two hundred fifteen billion, forty-two million, two hundred twenty-five thousand, forty-four".