22145044240145 has 16 divisors (see below), whose sum is σ = 28143418539600. Its totient is φ = 16670249969664.

The previous prime is 22145044240117. The next prime is 22145044240159. The reversal of 22145044240145 is 54104244054122.

It can be written as a sum of positive squares in 8 ways, for example, as 533916644416 + 21611127595729 = 730696^2 + 4648777^2 .

It is not a de Polignac number, because 22145044240145 - 2⁸ = 22145044239889 is a prime.

It is a super-4 number, since 4×22145044240145⁴ (a number of 54 digits) contains 4444 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 22145044240099 and 22145044240108.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28249292 + ... + 29022621.

It is an arithmetic number, because the mean of its divisors is an integer number (1758963658725).

Almost surely, 2^{22145044240145} is an apocalyptic number.

It is an amenable number.

22145044240145 is a deficient number, since it is larger than the sum of its proper divisors (5998374299455).

22145044240145 is a wasteful number, since it uses less digits than its factorization.

22145044240145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57276484.

The product of its (nonzero) digits is 204800, while the sum is 38.

Adding to 22145044240145 its reverse (54104244054122), we get a palindrome (76249288294267).

The spelling of 22145044240145 in words is "twenty-two trillion, one hundred forty-five billion, forty-four million, two hundred forty thousand, one hundred forty-five".