2044623320045 has 4 divisors (see below), whose sum is σ = 2453547984060. Its totient is φ = 1635698656032.

The previous prime is 2044623320027. The next prime is 2044623320111. The reversal of 2044623320045 is 5400233264402.

It is a happy number.

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 645006553129 + 1399616766916 = 803123^2 + 1183054^2 .

It is a cyclic number.

It is not a de Polignac number, because 2044623320045 - 2¹⁴ = 2044623303661 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2044623319987 and 2044623320014.

It is a congruent number.

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, 204462332000 + ... + 204462332009.

It is an arithmetic number, because the mean of its divisors is an integer number (613386996015).

Almost surely, 2^{2044623320045} is an apocalyptic number.

It is an amenable number.

2044623320045 is a deficient number, since it is larger than the sum of its proper divisors (408924664015).

2044623320045 is an equidigital number, since it uses as much as digits as its factorization.

2044623320045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 408924664014.

The product of its (nonzero) digits is 138240, while the sum is 35.

Adding to 2044623320045 its reverse (5400233264402), we get a palindrome (7444856584447).

The spelling of 2044623320045 in words is "two trillion, forty-four billion, six hundred twenty-three million, three hundred twenty thousand, forty-five".