2144122505045 has 16 divisors (see below), whose sum is σ = 2608265115120. Its totient is φ = 1691753900544.

The previous prime is 2144122505033. The next prime is 2144122505087. The reversal of 2144122505045 is 5405052214412.

It can be written as a sum of positive squares in 8 ways, for example, as 112397256049 + 2031725248996 = 335257^2 + 1425386^2 .

It is a cyclic number.

It is not a de Polignac number, because 2144122505045 - 2⁴⁰ = 1044610877269 is a prime.

It is a super-2 number, since 2×2144122505045² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2144122504996 and 2144122505014.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19669151 + ... + 19777859.

It is an arithmetic number, because the mean of its divisors is an integer number (163016569695).

Almost surely, 2^{2144122505045} is an apocalyptic number.

It is an amenable number.

2144122505045 is a deficient number, since it is larger than the sum of its proper divisors (464142610075).

2144122505045 is a wasteful number, since it uses less digits than its factorization.

2144122505045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 162824.

The product of its (nonzero) digits is 64000, while the sum is 35.

Adding to 2144122505045 its reverse (5405052214412), we get a palindrome (7549174719457).

The spelling of 2144122505045 in words is "two trillion, one hundred forty-four billion, one hundred twenty-two million, five hundred five thousand, forty-five".